Jumping back up to the discussion of the ghosts, I think it is really important to add Ben and Anakin to the end. Anakin was the first important Skywalker and Rey the last. If this is actually the “Skywalker Saga” and truly a multi-generational story, then all of them should be present. It ties it all together in the final moments.
As for Rey’s lightsaber, I absolutely agree with doing something to make it apparent Rey rebuilt it, cus I kept waiting for that to be said in the movie and it wasn’t, she was just magically using a broken saber. And that felt thematically weird to me.