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.
gogul: I second your proposals. The current BKR is of no significance when shown at games which were played long time ago. Although, of course, the BKR may change often during a long game, it would it more appropriate to use the BKR at the start of the game, or the BKR which is used for rating calculation, instead of permanently showing the current BKR even for finished games. Same goes for tournaments where I would prefer to see the tournament entry rating. If I want to know the current ratings I could look at their profiles ;)
Concerning your first proposal I assume that you just want to hide them from the rating charts? I wouldn't go as far as hiding the first 25 games, but at least the first three games should really be hidden. BK doesn't show your rating within those games, but after you've got your first BKR you suddenly see it in the rating chart, which appears to be some kind of contradiction ;)