For a long time they said the series would end with Season 5 but then Cartoon Network and the producers of the show decided to extend it beyond that because it was so successful. Hopefully, a lot of people are still going off of the idea that they are following the original 5 season plan.

If not, I've always suspected that they would end the series with a feature-length movie that leads into episode 3. I'd like to see one more season to wrap up the series, but I'd be okay with a movie that wraps everything up.

As far as edits, I've often wondered how hard it would be to just edit the multi-part story arcs into their own movie versions. It would probably take some tweaks and adjustments to make sure they flow properly as movies rather than separate episodes, but it might be a worthwhile project.