Candice, shapeshifter or illusionist: In the recap on nbc.com, frame 8 for the most recent episode, she's identified as a shapeshifter. In Xcited4Disney's post above with the quote from creator Tim Kring (out of curiosity, where is that from?), he calls her a "master of illusion." I'm inclined to go with what TK says directly. The recap may have been written by someone not in the loop and just going with what they saw on the episode.
I think this is more likely. Or perhaps Peter needs more time to master the use of multiple powers. Sounds like he needs more training from Claude!
Only thing about a power like Claire's is that it seems like the kind that is always "on". The user doesn't have to concentrate to make the power work. Claire gets shot, she doesn't have to think "regenerate and heal"; her power is going to kick in automatically. Dale's hearing and Charlie's memory are like this also.
By contrast, there are powers that the user has to, in essence, "turn on" -- that is, they have to concentrate to make it work. Examples of this include Nathan and flight, Hiro and time control, and DL and phasing.
Let's assume Peter can only use one power at a time. If he's injured but has to use other abilities -- fly to escape from Sylar or telekinesis to fight Sylar -- will "turning on" other abilities end up turning off something like regeneration that's always on?
Yeah, I know I've talked about the "one power at a time" thing a bit. In the Legion of Super-Heroes comic book by DC Comics, there's a character called Ultra Boy. He has all of Superman's abilities but with the one-at-a-time limitation. It's a little-used limitation but one I've always found interesting.