There's Aero and Aero II.
Aero is a 150 potency spell. Not that weak, but fairly low.
Aero II is a 210 potency spell and an awesome animation. This is powerful.

As Mcshiggs said, they gave BLM/THM umbral spells and WHM/CNJ astral. I would love wind spells on my BLM and all, but I have to admit that it does suit the WHM more.
I'm fine with the split.