After clearing PT once and then doing lower floors with maximum aether, i'm a bit worried about this deep dungeon.
It feels like they fucked up scaling somewhat. Monsters felt right when I had appropriate power, but now my party was cutting through them with ease. Floor 10 and Floor 50 bosses folded so fast they could barely do their attacks. I don't know if lower floors being this easy is good for overall long term health of this deep dungeon.