To answer your questions, Judas, I think that in order to broaden the scope (and because you might actually own the game on a disc), it will be any PC game, not just GOG games.
As for abandonware, thsoe are some hidden gems nobody under the age of 30 has heard of (theoretically), so I think that we'll try to only download abandonware as little as we can, and keep it on the DL.
I'll try and make a list of people who are interested in this idea, and we'll choose a game we'll agree on. That said, The Legacy: Realms Of Terror is a nice game.
Do my eyes deceive me? You actually played it? Man, and I thought I was a crazy person for preaching a bit excessively about it in IRC. Woo! I managed to convert someone! :evilvillainmustachetwirlandobligatorycatscratchingmotionwhilesittingonacoolchairformadoverlords: