I gotta ask: How would your fics play out with the Shattered Glass version of the characters?
Oh god ASTRONOMICALLY worse.
First of all, Convoy would 100% not be a secret, Optimus would’ve been dangling him over Megatron’s head the second he was born and rubbing it in his face that he can’t see his son. At the same time, he probably would’ve been raised to hate his own sire to the point where even if Megatron did manage to get him away from his crazy ass carrier, it wouldn’t end well. And I doubt Optimus would be treating Convoy well. He needs a successor that’s willing to be as cruel as he is, and you can’t get that by treating a kid nicely.
Cirrus would’ve probably traded places with Moonstream narratively and brought them to the Autobots for her protection. It’s not out of the question of him trying to worm his way into a relationship or even baby trap someone from High Command to cement their place. Maybe even Optimus himself. The one thing I think that would absolutely transcend universes is Cirrus and Moonstream’s bond. They would die for each other in any continuity.
Blitzkrieg would be a wreck, but for a much different reason than he is now. Chromebolt would be SO much less ethical and would probably be extremely disappointed that Blitzkrieg was born as small as he was. He’d probably spend most of his life angry and reckless and trying to prove himself to a sire that thinks of him almost like an experimental failure.
Megatron would probably be mostly fighting to get Convoy back, but for a much better reason than in my actual canon. He knows Optimus is treating him badly, and he wants to protect his son, but he can’t which is absolutely tearing him apart.
In short, even WORSE than it is now. Thankfully, that is not the real timeline of the fic so it will stay in my evil brain forever.