Wow, these rock. Mesh Hong rules!
My players are veteran LFR players, so I *need* non-WotC monsters for my new campaign if I want to keep them on their toes. IMHO, the best campaign experiences involve dealing with the unknown, which can be tough if everyone immediately metagames with, "Oh, this is probably a _______ with _____ abilities."
Re-flavor the creatures.
I recommend Mesh Hong's books.