One idea I had was going all-out with changes in Episode I, which is a prequel 3-in-1. Then the Cassian Andor show is Episode II, followed by Rogue One as Episode III.
As I said on Discord, that wouldn’t really work as a trilogy. It’d just be a standalone film followed by an unrelated duology.
I agree with everything NotTheDr0ids said. To really work as a trilogy, it needs the same core cast and not too big time skips.
Maybe we could have an alternate prequel trilogy focused entirely on Cassian, Saw and the rebellion; while the prequels are edited as a single spin-off movie in the style of Rogue One and Solo. Andor’s trilogy could go like this:
*Episode I = Andor Season 1
*Episode II = Andor Season 2
*Episode III = Rogue One
Sounds like what you’re referring to is more of a fanmix than a fanfix, when this topic is more about coming up with crazy ways to fix the prequels. Not that the idea you’ve come up with is bad. It’s just that it doesn’t really “fix” the original three prequels.