I noticed mention of a "Soul" bonus type. I'm personally a little leery of adding new bonus types, as it means it's less likely for womething else to mesh with it mechanically. Perhaps it could be changed to a Perfection Bonus (as in Book of Exalted Deeds)?
That is indeed a good point, and a Perfection bonus would also fit nicely fluff-wise. Changed. Thanks for the heads-up.