Fort in Headmasters has less personality than Star Saber...and that's not...much. But that was in large part because his gimmick overshadowed his ability to be a person The big problem with the city bots as characters is that there is no equality. They are huge ponderous...events. They have never once been treated as people, because they are fundamentally unequal. Metroplex has one of the most ill-defined personalities of the IDW regulars to the point where him smiling was an event. Their too...much to write as write as more than events. By making Scorponok and Fort Max normal sized, they are allowed be people. And introducing a city form for the current Max extremely ill-advised. What would be its roll? And what roll would it carry out that Metroplex is not already covering? Would the DJD be satisfactorily concluded if they were defeated with a fanservice Deus Ex Machina? It's a wonderful, wonderful toy/kids anime idea. It's not going to blend into the IDW universe or really any comic without mega reprecussions. I mean, Metroplex has had to be crippled so he doesn't end up having to solve all our problems. If Fort Max wa a city bot, in what way is any threat already introduced bar Trypticon still weighty? And I really don't like the idea of creating a super enemy specifically to give Max something to fight. Narritively, it's beter to keep him normal sized. I think the main problem is three-fold fold. 1) Functional citybots essentialy break the tension of most situations, particularly in a post-war world where one can just tag along behind the Lost Light. 2) Their introduction on either side is a far too easy way to re-direct the series back towards an active war scenario, because really citybots actively work best when one side is trying to conquer the other. 3) The introduction of citybots means you HAVE to introduce huge scale undefeatable threats. Which means the driving point of any story they feature in is "how bi. is the fight" instead of plot/character which is what is making both series work as well as they do/ To be quite frank I'm very not keen on introducing more combiners for the same reasons. Its only because Monstructor is unaligned and Devastator is character focused that they work.