Death Vs. Defeat - Disintegration Effect?

[Veritas-Ancora]

The story has had moments where enemies have been defeated but didn't actually die. I know there's some suspense to the story in this, but it can be confusing as to whether Nero died or was just defeated (obviously he lived per Crystal Tower), similarly Gaius and even Livia pose some questions now whether we just defeated them or we killed them for good. Yes they fell to the ground, but are they dead?

In traditional Final Fantasy, the "flash-and-burn" or "disintegration" effect helped a player know that a boss was dead for good. It brought closure that otherwise wasn't there.

For sake of lore, can the developers please look into this effect to help us know for sure whether someone is dead for good or just lying there in agony? Maybe even some sort of "soul aether" being released and exploding.