Okay, this'll be a bit odd: Perceptor could get a level searching for Wheeljack, having to navigate the broken Iacon city. He could have the half-track classics alt, and have to use scanning equipment (shows all energon signatures nearby) to try and find Wheeljack. It would make a nice mostly combatless level. Bulkhead could get a level with the Wreckers, where you have to stop a decepticon assault, while protecting Perceptor (i.e., you cause a ruckus to keep them away from him and Wheeljack), and your ability would be temporary invulnerability and melee damage boost. Anyone else have ideas?