Like others, I think the site would be great if there was some Mac and Linux support. Not for all games, but at least the ones that were originally made to run on Mac or Linux (for the games that are supported, perhaps make it clearly known?). In addition, if you guys at GOG could make popular old games that were originally Windows only able to run on Mac and Linux, I think you'd make several people very happy! I have no idea at all what it'd take to do that, though.
I'd also like to see the GOG team put up some more freeware games for download. I mentioned this in a topic for "Beneath a Steel Sky." I was unsure of signing up to GOG.com. Seeing a free game with decent reviews helped me decide to sign up (sidenote: I felt great knowing I didn't have to give GOG a card number up front. It was nice to know that if I didn't like the site I could leave without GOG having my information somewhere). Beneath a Steel Sky helped me test the waters of GOG.com. And GOG introduced me to surprisingly good freeware game that I would've missed out on playing.
I think more freeware games would have a similar effect. People would sign up seeing several games for free. Those games will also be introduced to larger audience under the GOG "Free" tab as opposed to competing with other games for attention in a google search.
It's also be nice for games to be in other languages when available. It doesn't affect me any, but I'm sure there's many who'd really appreciate it (just look at this thread).
The wishlist needs some work. There's been many ideas and opinions given about it already.
Great job with GOG so far guys! I'm impressed with the cheap prices, the compatibility with newer PCs, and being DRM free. Keep up the good work!

I'm another one asking for Linux support. Shouldn't be too difficult for most old games, and you're giving Vista and XP support already.
Or you could just use a Linux build of DOSBox, it's cross-platform after all. And several of GOG's adventure games could be run under ScummVM, also cross-platform.
AFAIK Cedega requires you to pay a monthly subscription fee, and not all games are guaranteed to work. Essentially the only major barrier to playing Windows games on Linux is support for recent versions of Direct3D.
Would if I could, but right now my means won't stretch that far, nor do I have the space to dual-boot.
This is very true. If it was me, and if the game was emulated with DOSBox, ScummVM, winelib or whatever, I would just provide .deb and .rpm packages with dependencies on said emulation software, plus a plain .tar.gz zipped installer for any distros which aren't covered by those two package formats, which is not many distros - mainly Slackware "package management is for wusses" and Gentoo "compile everything by hand" hard-liners.

something that IMO would be a good thing to happen is some streamlining in the system, looks like there are some games that are listed multiple times that I'd like to see merged. for example there's a "no one live forever" (which is incorrect spelling for the game) and "the operative: no one lives forever" which is the correct title. I bet that'd be a huge project though so just a thought on something I'd like to see improved with the wish list.
Edit: ok so I just read a bit more of the previous stuff. I agree with what MHE said on this topic.

Would anyone else like to see the General Discussion board broken up into smaller boards? Mainly, I was thinking of having a General/Other Gaming board to talk about games that are on consoles and games that aren't on GOG (I figure there are several gamers here, so there would probably be quite a bit of discussion).
Just something minor. If no one else cares whether it changes or not, I won't lose sleep over it.

Hm ... not sure it'd be high up on important features ... but I'd love to be able to get a choice between original language and english translation for games originating in non-english speaking countries.
Reason one: Game translations are notoriously bad.
Reason two: It's a great way to learn languages :).
-C.

My suggestion list:
Steam
since steam is open for any developer to distribute games, I would like to see GOG.com there. As with retail versions that you could activate on steam (thus having a disc and download option to install) you could buy games either here or on steam, and activate (via gog.com account verification) games you already bought to agregate your steam list. as for drm, the steam version would be protected, as I think is a requirement for them, but the option to have the intaller directly from gog woud still be available. Is kinda redundant, I now, but steam users like theyre games centralized. non-steam users wouldn't be affected at all
ScummVM
In the same line, since many games come with ScummVM integrated, and I already use it for other old games, we could have a single scummvm instalation for all gog.com games, instead of one instalation per game. the launch method could also be tweaked. Since it launches a .ini file, I cant add a shortcut directly for the game on my steam game list, only to scummvm itself

Game Resolution & Widescreen Support indicator on every game would be awesome!
With most of us having LCDs these days, lower resolutions really play a big roll in the game experience. If we could get an indication as to what a game's maximum res is, it would make a big difference.

Definitely agree with this. Would be nice just to know how big we can make the game (or even if it has options to change resolution and size) on the games page!

I would actually like to see some sort of system so that we could get downloads of GOG games we already have original copies of.
We could provide the barcode on the box or something or a photo with a specific code or something written on a piece of paper as proof.
We could request a download you send an email saying something like "BOBBLY DUKE" and we write BOBBLY DUKE down and take a picture of it on top of the box. Ok fine you elaborate on it!
This would make us applicable to competitions requiring us to have these games in our account and we'd be able to download them if our copies get too dusty or scratched (you know how those old games get!).
Oh and Linux versions of games that have them =3

That sounds like an awesome idea! Some of the really old games are tricky to get running on new PCs even if they're in mint condition. Showing some kind of proof of ownership and being able to download the game without paying for it again would be awesome.
I'm not sure how the legal and agreement issues would work out though. It won't be big a deal for me anyway. It's worth paying $10 to get a classic game to run on your PC without jumping hoops (DRM free even) in my opinion. Plus I think it's nice that the GOG guys get some money from us just for making those games work on the newest systems (with that thought: maybe GOG could give us a discount instead of giving it to us for free with a proof of purchase).

Ooh and for game releases that aren't a surprise - a page with a progress bar on how close GOG are getting to some new releases. IE:
DOOM - 99%
Thief: The Dark Project - 100% - RELEASING TOMORROW
=D

From a user standpoint I think that's a fairly nice idea, but from an strategical view it is slightly destructive, because it would bring all the competition in. Some of the games here are available on Steam as well for example. What would stop Steam from bastardizing a product's price shortly before GOG's release?
Imagine Steam would have priced Unreal 2004 at 5 USD one week before GOG released it, GOG would have barely sold any copies I believe (since Steam in itself may technically be DRM-infected, but is not considered DRM by the majority of average sixpack Joes out there).
It is in GOGs best interest to beat the competition at any time in the fields DRM, quality and price. Publishing a release list in advance would make that much more difficult.

Yeah I guess you're right.
Another quickie idea here - a download link of games you own on the gamecard, right now it just tells you to move to your My Account page, but you're on the Gamecard now... Why not be able to download it from there?
"You own this game - go to My Account to download it or CLICK HERE"
I would also suggest a brief popup description of what extras are - "Excalibur Pack - An extra pack of maps"
"Castle Attack - A small mini game to enjoy while you install"
That sort of thing. I'm full of small ideas like this so this topic is going to be spammed over the coming days unless I'm too busy playing Stronghold.

It's been mentioned before, but windowed support for as many games as possible would be awesome!

The topic has gone for over 25 pages, so instead of reading through it, I'd like to point out my own features wishlist.
1. Profile pages.
This is taken straight from the Steam Community pages. It's quite a lovely feature, I think.
2. A better downloader.
The downloader is OK, but having to add the games to the queue from the web page just makes little sense. Being allowed to download any game from your account straight from the downloader without the need to go to the website would be amazing.
3. More forums for general purposes.
Kind of self-explanatory.
4. Multi-language support.
While not a top priority, I think this would be great for business and for making GOG more readily available for the rest of the world.
5. A better game wishlist.
Consolidating different names for the same game would be quite helpful. Also, adding a status highlight on some would make us want the games even more!
6. Customizable options on games.
Something like a setup window from you in order to change resolution and such would be a nice add to the games we want to buy.
I'm just loving the GOG experience, and while there are still some things to do, it's simply an amazing place.