I'd personally like to do the gnoll. They're my favorite monstrous humanoid race.
Maybe just scrap his and keep the psionic mindflayer (which maybe could use a revision here and there- I'd like to hear your thoughts on that).Mind Flayer
Also, it's Gorgondantess. One word. Consistent capitalization.
Also, I thought the doppelganger was okay. Not perfect, but I'd play it.