Haha well I don’t really have much of an opinion on Unicron beyond “Welp, he’s out there somewhere I guess?” because generally like IDW!Shockwave- he’s used as a plot point rather than a character in most TFS narratives. I’ve seen the fan theories about how Unicron’s responsible for almost every shitty thing that happens- but he’s kinda like Hitler or Voldermort y’know?
I mean- he’s there, but you don’t really know him as a “person” more than a “concept” so you just go about your shipping and squeeing with barely a “yeah Unicron end of the world, Voldermort whatever.” because ultimately for a fan- Unicron isn’t really relatable beyond his representation as “THE BIG BAD END”.
So unless things change or Unicron’s character is expanded in some meaningful way beyond his role as “Robo-Hitler-Voldermort-Satan”, I doubt there’d be much interest in him as a character.
Can’t recall if it’s a canon somewhere or if it was fanon/ read in a fic once, but there’s been those ideas floating around of Unicron/Primus being necessary parts of death/life cycle. And that… just like the grim reaper in western human lore… people just don’t like him cuz they fear death/ the end of existence. But to that end, Unicron would defend his purpose by saying “nothing can or should live forever, for things must end so that others may begin”. He just… has a tendency to be violent/big/abrupt about said end, haha.
It could be cool to see a convo between Unicron and Primus in which Unicron admits it’s strange to harbor signs of life on his body, when all his existence his purpose had been for death, and how Primus, once buzzing with activity, sits hollowed and lifeless after centuries of war…
fuzz has a better answer here~ (๑˃ᴗ˂)ﻭ
(Although I honestly think that the only reason why they make Unicron our Earth- is to explain to the audience why the Cybertronians would want to come to our mudball lol. But there are meaningful ways of expanding on that “plot point” and to make it more than just a convenient excuse- which tbh in canon is taken for granted most times.)
But yeah, I would love to have an actual conversation between Unicron and Primus the way that canon material has OP and Megs interacting. In that through their long history of conflict/interaction their outwardly antagonistic relationship had somehow morphed into something deeper and more complicated than simple hate or opposition. <– this is the sort of meaningful expansion of “character” that would probably generate more interest in Unicron.
Rather than having Unicron just yelling down at whatever poor sod/crazy idiot who thought it’d be a good idea to sell their soul to Unicron lol. They could actually make him more appealing as a character- more Lord Vetinari/Mephistopheles rather than Voldermort/Satan.
(Wouldn’t it be interesting if Unicron approaches OP and seduces him to the “Dark Side” in the guise of greater good and plays him off Megs instead? Rather than having Megs be Galvatron-ized again…)