Chaos: That's all fair enough given we have established BKRs. I understand how all this works.

But is it not frustrating for those working hard on their provisional BKR to proceed up the rankings only to see someone leap frog to the top?

There are many instances where players are on a provisional BKR, have a dozen plus wins (some against very strong players), no losses and sitting on a BKR of say 1800. Then pop, someone goes right to the top on 4 wins. BKR is also important to these players!