A white Bumblebee as Bug Bite seems like a good reuse of the mould. Which is arguably why Exhaust is getting a mainline release - it's a way of recouping the costs of making Wheeljack.
Suppose it's too much to think they'd retool a bunch of panels and try and get a Cliffjumper? As for Exhaust, colour has grown on me, he will be a definite, but the head as others have said, not really g1 style so alt mode it is.