The folks over at Raving Toy Maniac have a regular Q&A with the Hasbro design teams. This month, one of the questions was about Universe Galvatron. They learned that yes, he was originally intended to be a larger class, and a triple changer, as well. They even included a sketch of the design for the "walker tank." All in all, mighty nifty, and a lost opportunity. See the interview here.