I was thinking somewhat of ‘enhancing’ my “Last Jedi, New Emperor” fanedit from a couple of months back by giving Kylo a new Death Star from Palpatine as well as a new fleet. I’d use Rogue One footage for most of it. If someone one wants to, they can blow it up in a ‘Rise of Skywalker’ edit and that can be the basis for Kylo’s ,last stand against Rey.
You could use the trench run Poe makes in TFA, and mix the footage to make it appear he destroys the Death Star.