I’m really wondering how this fanedit will end up 😄

Maybe you could switch the first scene of the new chapter to somewhere in the beginning of the movie ? It’s a nice filler that shows well what are the mandalorians up to and how they use the stolen imperial starships.

I think it can be an enjoyable movie, you could trim a bit the 1st ep, leaving a bit of pirate stuff (it’s fun and its a nice opening for the later storyline with Mandos rescuing the capital), trim the 2nd ep, leave some bits of 3x03 (depending on how much impact it ll have on the whole story), trim heavily 3x04, trim considerably 3x05 and cut 95% of the 3x06. The 3x03 side story can serve well to make the pacing better, to fill some moments/time jumps between the quests 😉