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.
pictures: Why not let users link to pictures that are hosted elsewhere - then it does not take any server space?
.... and possible a paid member only option. (If you open it to pawn, you will probable start to get many unappropriate pictures - which you may get some from members, but not as many as you would by pawns.)