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 normal games play it's possible to make an agreement, but in tournaments you do not know who you'll be playing against, and do not know whether they agree to use the diagonal opening.
Consequently, it's impossible to arrange tournaments here with the correct tournament rules.