Burn: First, I've had a similar reasoning for wanting more spells, _for the exact same underlying reason_. (That is, A/F Phoenix just has no spells to make use of it.)
I'm playing CPCS along with CBM and Endo's Kaleva mod, and the Steam spell is brutal. With F3W1, and Phoenix Power, you can blanket entire areas of the enemy army, and they really do just keel over. It's fun stuff.
It might need to be toned down a bit, though.