Knight of Kalee said:
An easier change could be this: remember that establishing shot of Kylo and the Knights of Ren approaching the Steadfast in their respective ships? Maybe the background could be edited, so the three vessels are in the night atmosphere of Coruscant instead of outer space. The skyline of Coruscant could also be seen behind the windows of the Star Destroyer when Kylo addresses the officers.

I think the difficulty in that would be matching the background with the whizzing movement of the camera.