There have been issues in the past with uncredited use. Straight from the horse itself.

different company though, right?
Do you suspect every company of illegal doings because one other company did shady things in the past ?
I mean, just wait until you have some evident before throwing accusations around. Using retroArch as part of a commercial product is totally doable as far as I can tell. (with the exception of a few emulation cores)

side note: while the linked article is of course right about the problem wrt the non-commercial license and 'tTIVO-ization', its complaint about not being contacted before using a GPL project is total nonsense.
GPL doesn't require you to contact the copyright owner and get his permission.

edit:
speaking of legal problems:
the far more difficult problem i see is how to deal with any required BIOS files.

Here is an interview about Retroblox were they talk about the emulation, software being used and why they went with the modular setup

http://www.nintendolife.com/news/2017/02/exclusive_getting_under_the_hood_of_retroblox_the_clone_console_to_rule_them_all

Nice interview, thanks for link wolfsite!

Indeed, support for Saturn's games would be a sweet deal. And according to the interview linked by wolfsite, there is some chance that it can be included later.

I admit, that I don't know too well the library of 3DO, but does it have some noticeable/interesting games which weren't present on PC as well? I know about such titles as Gex, Super Street Fighter II Turbo or Space Hulk: Vengeance of the Blood Angels, but all those were also released on PC (not to mention about other consoles). I'm asking out of curiosity, it's a bit "enigmatic" system for me.

RetroBlox - prototype in action - the ultimate retro console -- Gamester81
https://www.youtube.com/watch?v=OBqSKeLLcMI

Now that's sweet!! ;D

3DO has its gems, definitely. The best Return Fire version out there. Plus some gems I like a lot, such Strahl, Killing Time (great as the pc version), the best SFII/Samsho home console version by far, some classics such as Po'ed, Trip'd (yup go figure these names), BC Racers, the definitive Shanghai game - go check that music!-, Soccer Kid, Crash n Burn and an awesome RPG called Guardian War.

Revo K101 Plus would fullfill almost all those requirements, since it's supporting perfectly GBA carts and can be hooked up to TV, but I'm afraid that it won't cooperate with any external controller. Revo is in my opinion (at this moment) far better alternative to play GBA games (with carts) than original GBA or DS Lite, but it's rather oriented on mobile gaming (hooking up to TV is additional feature).

I know that there is this adapter to play GBA games on SNES and I wouldn't be surprised with support of this adapter on SNES module of Retroblox... But I'm guessing that it's definitelly far from "less expensive" option you're looking for.

That revo k101 looks badass but 120 dollars for a GBA player with tv out? Ouch. I could get a new 1tb external HDD for 50 or so and keep my GOG library+extras, and steam library archived and ready to go offline. And even then I could include a new 2ds on top of that for the price of a revo k101. I mean I'd go for the external HDD faster as my old 320gb external HDD is formatted as a ps3 backup archive.

Now I shouldn't have sold back a used ds lite I got from gamestop. Sigh*, nintendo is something you love in your childhood but as an adult you realize they can be overpriced.

Wow, 120$? I remember that I've bought in 2015 two hanhdelds (yup, I've bought two + link cable for multiplayer) for about 150$, on Revo's website. I didn't even know that price of it was increased so much. Ok, I see that they're selling them now in bigger variety of colors (and in other places than their website), but still, price's increase is terrible :/