I would like to add tanks (and DPS) that use AoE attacks on slept enemies. It may be more efficient damage against a large group, and you may think you're doing me a favor by keeping all the side mobs from targeting me, but it's literally murder (yours, specifically) trying to keep the tank healed with four mobs all beating him down at once. Each mob out of the fight is one less thing hitting you, one less tic that I don't need to spam my strongest Cures (and all the enmity it pulls onto myself) just to keep you alive, and one more tic of free time that I have to cast Esuna.

Caveat: This only applies to fights against trash mobs. Once the mid-/boss comes, spam away with all the AoE's because adds usually need to die first and sleep doesn't work on (most) bosses.