Increase the HD for Wizard and Sorc from D4 to at least D6, but 8/10 would be better.
Hemomancer is D6
Cleric is D8
Favored Soul is D8
Palemaster is D6
Bard & Harper Mage are D6
Warlock is D6
Shaman is D8
There's no reason wiz/sorc should be this low compared to other casters. In fact with the damage numbers from martials and overall power rating of said builds in terms of damage output, we may want to also update HD for the other casters like Hemo, Palemaster, Harper Mage, and Warlock to D8 as well.