stika: In all honest there is one thing where GOG is sorely lacking when compared to steam:
- Community features
Simple things like a friends list, seeing your friends wishlist, an IM service between friends, etc.
And that's not even getting into stuff like achievements, steam trading cards, posting screenshots etc.
I get not everyone likes achievements or trading cards, but they're optional and I quite like them
I prefer that GOG focus on its own advantages and not try to be like Steam in this regard. I think people come here because they prefer the focus on games, not so much on community (aside from a small number of forum people who browse and post regularly).
That being said, I wouldn't mind profile pages, but most of the others stuff I think can stick with Steam. Time spent developing those things is time that could be spent making deals, improving the catalogue, gather bonus content, etc. (although I suppose it would be different departments working on these things)