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.
As a side note, you can currently play a version of Hex and Twixt at LittleGolem.net -- so if anyone wanted to take a look at them, you can find those there!
I would be for adding them here. They are "different" games that are not found too many other on-line places.