After rewatching the film, the phrase that kept coming to mind is the one that Lawrence Kasdan always told JJ during the making of TFA “It needs to be delightful. Not too much talk…” With that in mind, here are my ideas for cutting:

Trim dialogue all over the place. There were instances when the dialogue reminded me of the prequels as in overexplaining both plot and character. This also goes for jokes that go on for too long. Less is more.
Trim Corellia’s chase. I’m particularly thinking of the middle section in which Kira asks if they’re faster and Han accelerates.
Remove Han telling Qi’ra and the guard that he plans to come back to Corellia. Let that be a reveal later on.
Remove first Han and Chewie bonding scene when they’re looking out the balcony of the ship. This scene is way too aware of the future. Let the bond develop more naturally across the movie.
Reshuffle scenes so you have the fireplace scene next. This way you establish the crew, their personalities and their stakes. This is when Han reveals that he’s planning to go back to Corellia for Qi’ra. We learn something new about the character!
Cut Val and Beckett’s kiss so it’s less jarring when he doesn’t mourn her later.
Next scene is Val with binoculars explaining the heist just before it takes place.
Cut the whole impounded ship thing with Lando. Have them go out on the adventure already.
Cut Qi’ra and L3’s conversation about the boys. Just have them arrive at Kessel sooner.
Let the Darth Maul cameo happen after the resolution with Beckett, instead of before.
Cut the overtness of Enfys talking about Rebellion and about Han maybe joining someday. Again, it’s too aware of the future.

All this with trims all over the place and I think the movie could be vastly improved.