I dunno if the clones would still be alive. They age at double the rate, making them in their twenties at 10, nearly 30 at the end of the clone wars, and in their late 50’s during Rebels… add another 10 years, they’d be in their 70’s during The Mandalorian, add another 30 years and they’d be around 130 years old during Rise of Skywalker.
Baby Yoda’s age would be roughly eight, if he’s roughly 5 during The Mandalorian, but his face is so underdeveloped that it suggests he’s possibly a younger equivalent age. Either way, his facial features should have developed more over those 30 years, rather than just being a slightly larger creature.
Not trying to tear down the idea, just trying to explain why I disagree. I think it’s a fun concept to add to your edit. I think, if someone were to attempt re-shoot elements to drop in, Hera and Jacen on the Ghost would be pretty cool.