I think they'll likely introduce some sort of Elite Qualifying Dollar requirement (in line with UA and DL) to further cull the herd.
I hope that since they have the opportunity to rethink the program more than UA or DL really did in introducing MQDs, they'll approach this goal (which they do presumably have) in a less kludgey, less unfriendly to partners (particularly supposedly metal neutral joint venture partners) way. The obvious approach would be a stronger fare class weighting, either AA's own EQP system (without the EQM option) or a status credit/tier point system like BA and QF, which again has multipliers for premium fares more in line with the typical fare differences.