So, I just recently saw some footage of a group killing proto-ultima at fanfest and it casts supernova at the end of the fight. It has already been demonstrated that cutscenes can be used mid fight via zurvan.

So what I was wondering is, would it be possible to put in a little easter egg :^) of the infamous Sephiroth's supernova maybe as a hard enrage(the maximum time allotted to fight a boss) to a fight. I would fully intend for it to be unable to be skipped just like the original but I also feel it wouldn't be forced onto players with it being a hard enrage to a fight.

Just a random thought, maybe it can be used in other ways as well, it seems like a fun thing to do though maybe.