Five hundred beelion treelion quadreelion quatloos says he gets his original power back, to be a power sponge, and it will happen before the end of this season (tho I hope they hold off on it for several episodes at least). The open questions are 1) are the writers smart enough to slap some sort of limitation on him to avoid the overpowering problem; and 2) do all the powers he absorbed pre-Arthur-hug also come roaring back (doesn't really matter either way since it's easy enough for the writers to throw a mind-reader or invisible guy in his path again).