im sure you have already taken care of 'perfect shadow' and the lightbringer series; and unfortunately i have not found anything i like 'as much as' his books
but because of this, i have actually started trying my had at it
im nowhere really at the moment, just a dozen pages and even more brainstorming.. lol
but to the suggestions, on brents site [link]
click the 'books' tab and then check out the right side of the screen. also, just explore his site in general and there are ideas all over
hope i was helpful at least in the least
let me know what you find!