I could only pick 2? But... I wanna replace the WotC boards, have both 3.5 and 4 ed covered, and cover any other non-D&D game out there...
Also, if there is support for it, I will move the summoner's handbook over here. But I don't want to be the one maintaining it, and it is supposed to co-exist with all those lists of good summons already in existence. Please don't make me move all of them as well...