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.
Purple: I think when you typed "default" you meant "delete"?
Deleting isn't for delaying a move. It gets rid of the game completely. (I guess it's a pretty effective way to delay, LOL) I believe that the delete option is only there for the first 2 moves. It is ideally for getting rid of a game that you got into by mistake. (There are a few examples mentioned lower down..)
This option also doesn't affect your BKR in any way.