I would rather have them stay indipendent. After what happened to Evolution.........if Imsomniac screwed up badly just once, there is a good chance they could get the axe under Sony, like evolution or zipper without getting a second chance.
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.