The burning [lightning] wall spell oversimplifies most encounters; it should do damage less frequently and not necessarily stun-lock enemies in place thereby forcing more damage...

Anyone else agree/disagree?

Hail Spikes should also be changed to be resistable in some fashion - perhaps based on spiritual resistance? It's silly to find Josephine tougher than the Lord of Chaos because of her liberal use of this spell...

I agree that those two spells are kind of overpowered at higer levels.
However I don't agree that "Hellspikes" should be resistable because you will need an unresistable spell at the later stages of the game. Maybe its damage can be lowered a bit. The same goes for "Burning Wall" too.
Just my two cents!

BTW, wellcome to the forum.