wolfsite: I would again say that the main reason for PC users to get this collection is ME1 due to the gameplay changes and fixes. The original Mass Effect wasn't designed to take advantage of a multi core CPU so if they correct this that could help performance immensely (provided that modders haven't done a fix already).
anzial: Not sure what you mean, ME1 ran just fine on my old rig at 4k res with the mods, performance was just fine, visuals were great, didn't see any issues whatsoever and gameplay suited me just fine. In anything, it was ME2 which annoyed me with changes from ME1 that limited my choices somewhat (when I played them back to back). LE ME1 also loses the Pinnacle Station DLC, so in exchange for questionable improvements you get less content. At this point, before the actual reviews of the LE post release, I don't see any point in this tradeoff, especially when I'm supposed to pay AGAIN to get less.
I posted the changes they are making to ME1 earlier in the thread so I would suggest reading that for what is being altered, I also posted other alterations being made in other areas of the thread as well (including the post you quoted but cut out)
I would also suggest doing a search on Mass Effect 1 CPU performance as there are a number of issues due to the port, I never had the issues that people have reported myself but I have had a lot of the Frame Rate and other hardware related issues, again I am aware people have made fixes for some of these.
Also I'm not saying everyone should go buy this, in fact I'm showing that there is minimal reason for a PC user to get the collection as the main changes are in ME1, all other changes are to graphics which mods can be used to achieve the same improvements.
As for Pinnacle it is not being left out because they want to leave it out it is being left out because the source code being corrupted.
Al in all there are only 3 reasons for a PC user to buy this:
1. They never experienced the Mass Effect Trilogy and this offers an all-in-one entry point.
2. They don't want to deal with installing all the mods to achieve the same effects or dealing with compatibility issues.
3. They want to support the Mass Effect IP so the series will continue, I am betting that there are people that will feel that if this doesn't sell well they may put the franchise back on ice (no idea if this is true, but it's EA so I can see it).