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.
pedestrian: of course, who would like to play for stakes with grand masters ... but you and me, we can try to play pretending we use doubling cube ... want to try one game and find these situations for doubling ? Let's play for funny $100 ... would you ?