Hmmm, alrighty. I personally would like to see a little more Steam integration. In games like Savage: Resurrection, I can press shift+tab and see a clean, concise list of the most recent people that I've played with. What's more, I can add or message them from that screen, so that we could play later, or even look up players from last night's game, etc.
In my experience, it works really well, but there would certainly be an issue to be had with the GoG version. I don't know how they would rightly sort this, so maybe your suggestions for a handmade system to suit our needs would work better, and not separate the games so fundamentally from each other.
A rep system would be cool. I would love to be rated as a hardcore RP'r, and meet like minded individuals. Hopefully ones with a taste for challenge, too! I would also like to add that they should prioritize adding in VOIP, as the game sorely needs this feature right now. I keep having to add pubbies on Skype, and my contacts list is filling up quick. X_X I'd say it's needed almost as much as adding people from past games, doubly so since I've started practicing my pirate accent.