No, not Alternators. One that covers all the different size classes and the focus being having all the different vehicle modes at the same scale. Ultra and Leader class would be jets. They may have to be small jets because some can be incredibly large. Voyager class would be military vehicles and construction vehicles. Deluxe class would be trucks and the like with Scouts being regular cars. I'm guessing at these size scales of the real life vehicles but that sounds about right. Characters would be chosen based on their vehicle modes, the importance of their role in Transformers and what would be appropriate with other characters in the same line. If Optimus Prime is a Deluxe truck cab, Megatron would be a Voyager tank with Superion being a Leader jet (not a combiner but still just as powerful as G1 Superion).