I think Tron and LOTR (not in that particular order) will happen before another POTC in terms of VE but I do think *eventually* there will be one if they keep making POTC movies.
(I am one person selling one, in full disclosure. ) My personal reason was just making a spot for Ghostbusters, AFM or TOTAN. If my POTC doesn't end up selling, won't be the end of the world - we still enjoy it!