Well, since we know that Ultimate Bahamut is coming very soon, a thought dawned on me that I think would be awesome - maybe even make sense in the context of lore as well. Maybe we'll have Ultimate Primals...or whatever the devs call it after Ex. The thought would basically fighting the original incarnations of each primal. Since we learned the truth about what the current primals really are back in Heavensward, I think it would be nice to fight them as they were in their original states, before repeated summonings and all that.

Except King Mog. Those moogles on EX can go to hell.