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.
drainking: If the invitation doesn't suit you, you can reject it, and negociate the adjustments of the game with the opponent. I do it when someone invites me without vacation days.