Thanks for checking it out!
I decided against adding any Prestige class powers since I wanted it to be a more vaniila+ type of mod and those classes aren't in K1. Also to make things easier on myself. I'd consider making an option or separate mod to add it, maybe as a higher level power. Scripting the stat bonuses should be straightforward but I'd need to learn more about models and animations to get the visuals right. Force Scream is supposed to use the same "fury" casting animation but I couldn't figure that out so I just left it default for now. I read somewhere you can't put custom casting animations in spells.2da.