In that case, maybe Taur shouldn't give a max mana penalty. Being forced to double attack everything is a very serious penalty in itself. You can't fight anything that 2 shots you, making regenfighting mostly useless against higher level foes too.
Or what if you gained damage reduction on the 2nd strike, so its more likely you survive it with some health, and at the same time arrive at the Berserk threshold for some sweet damage bonus?
Edit:
About the Chronomancer, I was aware how powerful the CP bonus is, that's why I added the XP penalty to encourage fighting higher level foes. The max mana decrease is a mild hindrance, since you want to regenfight anyways. Also the fact that you need to explore to gain gold/pick up glyphs/find shops cuts back on the power of Time stop. On the other hand it's not completely luck based, since the increased sight radius (works like the Halfdragon's) let's you find targets and preserve empty tiles more easily.
I didn't think it through, whether 0xp lvl1s is too harsh or not, needs testing to find out. Be aware that slowing it will make it produce xp, as well as the balanced dagger at lvl1.
Just to compare it with other regenfighters, monks are screwed over by curse and debuffs, and due to low damage hits, they are bad spellcasters. Gorgons are less effective, but handle debuffs better and can consume popcorn more easily. They get annoyed by undeads though.
This new class is the least picky in targets so far, unless you take into account that lack of resistances will make it hard soaking damage in the first place. It also starts out being somewhat inefficient, but stacking CP will solve that.
The intention behind Confused is to give the class some weakness in spellcasting, so if you want to compensate that you most worship gods/stack even more popcorn than others.