This thread got me thinking about another angle for the Starlight project.
I was playing with the idea of having Rey see bits of the Starkiller firing which happen later in the movie as a way of linking the Starkiller to Ren’s ambition to be more like Vader, but it could also serve the purpose of revealing the true capabilities of Starkiller Base. Basically, for the first half of the movie Starkiller is established to be merely a way for the First Order to create its starships. This could be visually communicated by having a bunch of Star Destroyers issuing forth from the big circular opening. Only after Rey’s interrogation and Ren’s vision is it known that the base can also be used as a weapon.