Not my thread, but if we were to remove Mustafar I’d much prefer starting the film at the point where Kylo’s TIE is flying through space with the Wayfinder, rather than right on Exegol. First of all, it’d allow for more buildup to what is a pretty big reveal, second it gives a little bit of excitement to the opening, third it shows how difficult it is to get to Exegol (important considering the whole film is about getting there), and finally it’s just a killer piece of score I’d hate to lose.
If some VFX wiz could make that shot work as an opener I’d love to see it.