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.
Magenta Spiral: Actually, adding brand new games would required strong Java programming skills and due to security reasons I would have to check all details of such code before it could be added to the site. Modifying start positions of already implemented games is much easier.
However, these games should go to a special section, something like "user defined variants". Hmmm, not a bad idea at all. I will think it over.