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.
What about the game of Mill? I know of one other site that has it, www.pocket-monkey.com. It is a fun game, and it would fit well with the games that are already here.