Don't like your Determination proposal at all. Not only is it a balancing nightmare, but you'd remove Parry and make Determination basically take its place for PLD? And have WHM reduce enmity generation when they already have a 50% enmity dump? But mostly, terrible for balancing.

For speed, instead of increased TP regeneration, I'd rather it reduce TP/MP costs.

Piety is mostly okay, but I'd like to see a bit of a boost to MP regeneration.

I think if we're going to remove any stats, it should be accuracy.