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.
CryingLoser: Being able to challenge the top position, isn't this what ladders are all about?
Rating lists are just what they are: rating lists. They aren't ladders. We already have ladders. And note that currently, someone cannot hold on to the top position without playing forever - if you haven't finished a game in N months (N == 6 for rooks, less for lower ranks), you disappear from the rating list.