Given the current trend of the Alexander Accuracy Requirements and the work iDervy and I did on figuring out the value of Accuracy per % Hit Rate here is what I come up with for the Last Tier of Raids.

Gordias:
Rear - 537
Flank - 591
Front - 645

Midas:
Rear - 591
Flank - 645
Front - 699

Final Alexander
Rear - 591
Flank - 645
Front - 699

Looks like Creator Accuracy is the same as Midas Accuracy : )

BRD BiS Flank Accuracy
BRD BiS Relic front ACC
BRD BiS Relic Flank ACC



BLM BiS

(iDervy's Weights)
CRT - 0.2
SS - 0.23
DET 0.17

iDervy built a simulator for BLM to actually verify if the 0.4XX weight on SS is valid and determined that it is not.

NIN BiS Front
MNK BiS Front
WAR BiS
PLD BiS
SCH/AST BiS
DRG BiS
DRG Relic
SMN BiS
MCH BiS

BRD Crazy CRT/SS Test Build