I didn’t mean to diss that incredible work - I think it’s 100% necessary for the end of the Skywalker saga. I only brought it up because it’s worth considering in the discussion of how powerful Force ghosts ought to be.
Also, the way the scene plays out originally is a more blatant ripoff of Iron Man vs. Thanos. I’d say adding the ghosts and changing her line actually alleviates some of those similarities.