Do avatars/spirits benefit from the SMN's atmas in Abyssea? Has anyone tried, say, ice spirit with Ultimate+Beyond? You may not be able to predict precisely what it will cast but you know it will be ice, so it will get the extra benefit from Beyond.

I always thought the reason spirits had higher perp is that the cost of their spells don't come out of the SMN's MP pool; if you want to have an avatar cast a spell you have to BP and use MP for it.