I wonder if there’s any way to just cut out Starkiller base? I really don’t like there being any planet killers post-ANH (removing the Death Star from RotJ is another question for another time, and one I think I already have the answer to). The planet killers after ANH are really bad power creep, though, and I think they really undermine the Death Star.
The planet killing capabilities of Palpatine’s fleet in TRoS would be really easy to remove, though, IMO.