If Pandaemonium is representative of this game's 'final dungeon' in a homage to both FF9 and that 'World of Ruin' motif that they have going, and if a scythe wielding Zenos (with Fandaniel as his Avatar) are waiting for us at the top, a lifesteal themed boss would make for an excellent final fight. Phased council fight with a final phase in Possession mode. I'd dig it.