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.
Legal or not put prize tournaments exist on BK now, so what is a difference?
Are you saying that any match/tournament with an entry fee is considered as gambling? see http://en.wikipedia.org/wiki/Gambling