Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
ChessVariant: I know Fencer is not a fan of variants of variants, but there are a few that I think would work really well. (including the ones mentioned below)
What I would love to see are more Dark versions of many of the games (dice, fisher/random, and crazy screen are 3 that come to mind). For a person like me (who is not very good at chess), dark, dice, and crazy setups make me at least believe I have at least a some-what better chance against players who are "experts" at regular chess.