I’ve said this already but I would’ve had Mon Mothma be the new Sidious - pissed off because her unholy alliance with Palpatine in ROTJ (she killed the Bothan spies herself and passed on the false Death Star information in exchange for a seat at Palpatine’s side) was thwarted by the rebels. She would have been reconstituting the Empire in secret whilst corrupting Ben Solo with lies about his folks and glorious tales of his grandfather Anakin Vader.

And I would’ve had the New Republic using Star Destroyers and Tie fighters while the FO flies X-Wings and Y-Wings. Just to mess with the audience’s heads…