Polls for future game changes
Some MMOs already implement this feature, Runescape (for example) has ingame poll booths where active players can voto on game changes, regarding to combat, PVP, etc., specially, no major change to game mechanics are ever made unless there is at least ~70% approval among voting players.
Would be nice if every MMO had this, also, make players voto count more according to how old their subscrition in the game is, so for say, every ~6months of subscription time, your voto counts as one vote extra, that way someone subscribed in the game three years ago would have a vote that counts for 6, and someone that has a one year subscription would have a vote that counts for 2 and so on. People that have subscriptions from way back into 1.0 would have the most impact when voting.
That way the game can keep their loyal fanbase that will actually play the game for years on from now happy and give a fair voting for everyone.
I see it as a way to be much more in touch with the community.