Well it is true that character development is important whilst RPing but I think you might have grabbed the wrong end of the stick. The RPB and RP sections of this club are probably not going to take place in the same universe, unless you choose to re-use a character. But where's the fun in that?
What I'm saying is that if an RP character is made up of how many matches you win or how much experiance a character gains then there is obviously going to be a lack of balance. Remember that when you RP you have practically unlimited choices for your character (assuming that you don't god-mod or don't follow the universe of the RP) so if you used the same RPB character as an RP character then you would find yourself limited to the boundaries you've already placed.
Well we've not really ruled out any ways of judging. The 'points' system as you say might still be in place (no judging standards have been outruled except an internal ranking system), however since the score is only used in judging a match and is not used as a character rank then it may be that it will be held in place.
I think you just got confused by the idea of the RPB having a score with the actual character having a score. Not to worry, nobody will be forced to the bottom of a list.
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Now that I think I've cleared that up I'd like to propose that the club offers some RPB hook-up practices. In the same manner of speed dating. In other words if anyone chooses to sign on to this list then they can be put into RPB matches with another random participant, much like Alexander tried to acheive. Of course this is just an idea, but if people do sign up it'll give them something to do between tournaments etc.