@devonapple: With that in mind, a reflavoured Incite Emotion power would be a reasonable choice for the Sphinx. Perhaps it could be combined with a stunt that lets the Sphinx use Scholarship instead of Deceit for mental attacks and maneuvers. I guess we can call it a variant on the basic Sphinx.
@Belial: Love the revenants. Great theme, pretty good mechanics, and appropriate for the high-level games where most of the stuff in OW is too weak. The game I'm GMing (and you're playing in), for example. Have you considered adding those powers to the custom power thread? I'd do it for you, but it seems a bit rude somehow.
I was planning to do a movie-style zombie myself, which would have essentially been a weaker version of your Hunger Revenant. Actually, I may still do that.
@both: You might already know that there's a DFRPG Resource Wiki in development. If you guys could help set it up, it would be greatly appreciated. And if you don't have the time/interest, could I at least add your creations to it?