MBaggese:I can see your point, but...only a but, it could be someone who has disabled their Legend/TM/M account and wants to start over.
As I said, pending investigation. If further investigation finds a player who had disabled a prior account, then the current account will be reactivated. However, if they are found to have an existing account in addition to the account in question, all of that person's accounts should be disabled.
My suggestions: Either make a set maximum number of credits winnable at each tier. or add MPC prize credits to the total prize money won, and have tier based on average or credits won, whichever watermark is reached first. If you are a hack, and you win 100 credits, you move to amat regardless of your average. An amat that wins 200 moves to pro, and so on. That way, sandbagging is impossible because when you win X credits, regardless of average, you move up in tier. Or if you get X average, regardless of credits.