Now I’m picturing Rey putting 500 sabers behind her back, Ben pulling them out one after the other like a magician pulling a string of handkerchiefs, as Palpatine and the Knights of Ren watch patiently.
Or maybe “1000 lightsabers to Exogol” is metaphysical. When the force ghosts appear in jonh’s edit of the final battle, have all of them ignite ghostly lightsabers. Then use edited Attack of the Clones footage to have ghostly Jedi appear and light up their lightsabers throughout the grand stands of Palpatine’s arena.