If all of the Autobots were trucks, then yeah, that would be an issue. Like how nearly all of the Predacons are dragon-like reptile bots. There's just so much more that could have been done. Make some of them more serpentine, or stocky, or with massive limbs. These are alien robots we're talking about, the creators shouldn't confine themselves so much to a couple models of what they "should" look like.
So, I heard John Hurt got to be The Doctor.... um, what's his number now?
Number never gonna happen.
Look at Grimwing though. Or Hun-Gurrr.
Oh oh oh it's magic, you knooooowHow does Rainbow make such adorable things?