Black Mage:
Bring Fire IV down to 290 potency
Bring Enochian down to 12% magic damage

Monk:
Greased Lightning now only increases damage by 8% per stack
Fists of Fire now only increases damage by 8%
Leaden Fist potency reduced by 20

Ninja:
I don't know enough about NIN to suggest changes without upsetting everyone.

Red Mage:
Verfire/Verstone potency increased to 290
Verthunder/Veraero potency increased to 330
Scorch now grants 10/10 mana instead of 7/7
Reprise potency increased to 300
Reprise mana cost increased to 7/7
Manafication magic damage buff increased to 10%

Dancer:
Devilment buffs increased to 30%/30%
Saber Dance potency increased to 700
Fan Dance potency increased to 250
Fan Dance II potency increased to 220
Fan Dance III potency increased to 270