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.
mctrivia: I've been already thinking about creating a rich cross-platform client with several different profiles (cell phones, PDAs, Java desktop application) but, as you said, it's a time consuming job. I'll think it over.