Did you read my post about salaries used as AA recruitment bait and why? If so, you should understand the reasons for the pay structure. The MDAs hate it that CRNAs make good money and are forced to seek similar pay for their AA minions to entice them into the field. If AAs weren't a guaranteed billing opportunities for the MDA, the MDAs would be howling about AA pay as well. The AA pay structure is all about A$A politics, nothing else.