About Warfare
I think balance for the sake of balance is a bad thing. Imagine a fighting game where every character is exactly identical. It is balanced, no doubt, but also boring. That being said, Warfare doesn't seem so overpowered at all. It is stronger than the other skills, but you can only put in 10 points and more importantly it doesn't make physical damage better than magical damage. If the wiki is correct, then a lv 20 fireball does ~1800 damage and a battle stomp ~1100. Looks fair to me.
Warfare would be just fine if it did not affect damage done by daggers, bows/crossbows, and Necromancy spells. Really, it's the fact that it's better to boost Warfare than the actual schools associated with those weapons is what I would consider a problem. One skill being the best at boosting damage for four completely different fighting styles reduces diversity and channels people into using cookie-cutter builds.