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.
In case they will be implemented, then there should be an option to let the opponent see your conditional moves or not, as in some cases it might be kind of spoiler :)