Actually, if you want to go with the "original" sequel plan (as expressed in Bantha Tracks circa 1978), then there would be nine movies set after RotJ. The original plan was to have a 12 movie saga, with ANH as the first episode, not the fourth. I agree with you, though. A full, 15-episode saga would be a thing of beauty, CGI or not. Unfortunately, I doubt GL would let them use the "Episode" moniker for fear of violating his precious "vision."

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We'll just have to wait until the old bastard kicks.