I thought it would’ve been interesting if it took 4-8 Star Destroyers firing at the core together in order to destroy a planet. Each Destroyer isn’t equally as powerful as one Death Star, instead it sacrifices firepower for mobility.
2 Destroyers would have been enough for me (that they are powerful and to be feared, but not as powerful as a Death Star) - and also to mirror the dyad of Rey and Ben being more powerful when working together. I think it could have worked better like that; especially if the timing of the two scenes could have been matched up to highlight this? ‘Ifs and buts’ 😉