[Azeral]

Well, they're...Conjuration 9, Astral 7, Fire 3 or 4, and cost 222 astral pearls, so they need to become unwishable immediately. Why the hell would anyone bother casting them normally? I mean, sure, you get the other conjuration stuff along the way, but the other path gives you alteration stuff along the way and the other various powers of Wish.

This has absolutely swayed me toward powerful nationals becoming unwishable. This is a fairly clear cut case.