Originally Posted by
MoofiaBossVal
Oversoul may be used as a last resort, but if driven to a wall, Valens WILL order it to be used, be it Alfonse in the cockpit or Valens himself in the cockpit. Valens would rather do everything he can to get back at Gaius. The only way Oversoul wouldn't be used is if the system is damaged, or if the scientist guy at Werlyt has a change of heart and sabotages it.
A Shinryu Oversoul doesn't seem likely to me, for two reasons. First, mentally it was just the embodiment of pure, destructive rage without any clever thought, incapable of reasoning or cunning. I'd imagine that Valens would want a warrior who can at least think, not a mindless beast... which is why he discarded Zenos in the first place. Second, Shinryu doesn't have hands. He wouldn't be able to operate the levers and buttons in the cockpit... assuming that Shinryu's size didn't explode the cockpit in the first place.
Someone in the comments of the twitter post mentioned a WoL Oversoul using data Aulus collected in Ala Mhigo. That'd be cool, but it doesn't work because 1. the Oversoul target would inherit the WoL's behavior and thinking, meaning that the Oversoul WoL would immediately join the real WoL against Valens. Unsuitable for the same reason Zenos was discarded: can't be controlled by Valens. 2. having the WoL act as a trial boss... how would that work? Would the WoL boss look different on each player's screen? It might have made sense for a solo duty, like the DRK 30-50 job questline solo duty, but I can't see it happening for a 8-man trial. The WoL being a different size depending on the race and size and armor of your WoL could also mean players have problems coordinating their positioning.
Varis is unlikely because he was a trial earlier in the ShB patch cycle.
Emet/Solus is possible... we've never fought against armored Emet like that before. I don't think it could be old bearded man Emet/Solus, though. In Cid's flashback in Bozja, old man Emet/Solus' model was just Varis with Ramuh's beard pasted on, so the devs are not going to reuse that model for closeups. So it'd have to be a brand new model, and if the devs knew that there was going to be an Emet/Solus Oversoul fight later on, I'm sure they would have created a proper model for old man Emet/Solus by then. So if it's Emet/Solus then he'd be younger, from when he was still conquering Illsabard and Othard. Did the technology built into Garlean armor to record people's brain waves even exist when Emet was still going about conquering? Seems like a rather recent invention to me.