What old FF enemies would you love to see as primals?

What sorts of mechanics would you like to see implemented?

I personally would love Alexander to be a Dungeon/primal. Having to fight through levels and hordes up until a climactic clash with it's core.

Anima

Could have an enrage timer that resets every set number of time. The fight would consist of switching between the upper half and lower half of the primal. The upper half would include adds and the lower half would be a dps check to be returned to the surface before Anima wipes the raid.