The new updates look terrific, Elves! I'm excited to see your interest rekindled in this project!
Also, check out this PrC by Djinn_in_Tonic from 2009. It's a shadowcasting & Shadow Hand maneuver-based PrC. It might be useful to you ...
https://forums.giantitp.com/showthre...cion-PrC-PEACH