I agree GLogus. The first 4 to 5 episodes would be an extremely boring first movie. But depending on the length of the final 2 episodes, it may end up having to be 2 movies. The way the show is structured makes it really hard to fully remove massive portions of episodes. It’s honestly a shame, because I think there is a really good single movie in there. But I really haven’t seen a way to achieve it yet, without outright removing full episodes.
I think Matt.F had the best solution for this. Relegating a lot of the first three episodes into the crawl instead, which would be a huge plus considering those episodes are about an 80% constant drag on the plot. And with that we could remove Ahsoka and Sabine’s weird relationship that never happened in Rebels, which would be a huge improvement to the show imo. We could start the movie with Ahsoka going to pick up Sabine to go find Ezra. With a little AI line work, I don’t think this would be that hard to achieve.
Instead of Ahsoka and Sabine having a prior “Jedi/Padawan” relationship, we could change the training scenes on the ship as the first time Ahsoka’s started to train her as a Jedi.