drmlessgames: For example, theres an old adventure game called Dark Seed, made like in 1995-6. Would that count as a good game? It's definitely old, but was it good, as well as more or less popular enough, to market itself? Apparently the devs of that game thought so, at least enough to make a sequel for it. But would that game generate enough buzz on its own and the help of the feedback from the community to fit GOG's current business model?
I should certainly hope so, because it's precisely that kind of game that's the main reason I am here. There's nothing that makes me more excited than a GOG-release I haven't heard of before, especially in genres that I like.
Remember that GOG does not need to sell hundreds of thousands of copies of each game in order to make a profit. As long as a game is good, and handled properly, it can generate enough buzz and sales to be profitable in the long run.
In fact, I think pushing more obscure games may be an advantage for GOG. It will help make their service unique, and that brings customers. There are always people who are after something a little different.
So my advice to GOG would be: Bring us more old games, from the eighties even, and don't skip the more obscure ones. And if you give us Dark Seed, I would buy it - it always looked interesting to me, but I never got around to playing it.