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.
If the timing of the Fischer clock were done using client-side javascript then it might be possible to work out a decent way to have sub-hour times and bonuses. It may even be possible to create clock control suitable for real-time games, such as (in backgammon) 2 minutes for the game plus 10 seconds bonus per move (though that's not taking postback and reload into account).