This is a great idea. I'd love to have a challenging dungeon and new mechanics where two tanks need to tank swap mobs.

I feel like AoE rotations are terribly underrated. If I had to AoE the enemies for a while, interrupt their skills, and separate the mobs when they're doing a spell to increase the strength of the other mobs, I'd really get a lot more out of this game.

Will they do it? Probably not. But I'd be thrilled if they did.