[@The Kid Lantern] I still don't see how you're using IQ as part of the battle mechanics. So far it sounds like it'd only be a narrative element for the game.

Perhaps you could tie all three of the basic stats (IQ, Strength and Speed) together in a way which affects Attack and Defence?

What I mean is that Strength and IQ together would give an Attack bonus, as a smart fighter like Superman would know where to hit an opponent to cause the best damage as well as having the raw power to back it up. Similarly Speed and IQ together would give a Defence bonus, since a fast alchemist may be able to leap behind cover when the iambic starts to bubble, but a smart one would know when he should start running.

This should also balance out 'naturally gifted' characters, who concentrate their point on the basic stats over the 'trained' characters who have gone for high Attack and Defence and gained more abilities to chose from. Either you have a few abilities which would work really well, but which the opponents would be able to learn and adapt to quite quickly (hence only being able to use a Defence skill twice per battle) or a greater number of weaker skills which could be used more often, but to a lesser extent.