Well, I just watched The Mandalorian and Grogu. I think this is your biggest challenge yet, Archbagel.

General Thoughts (minor spoilers, but no specifics I think beyond the trailer):

The movie holds up okay as a combo of about 3-4 episodes. It feels like they essentially did what you strive to do in your edits, knit a group of episodes together into something that makes sense, but it also doesn’t feel like the content was necessarily meant for that type of format.
The amount of action and creatures in the movie feels like overkill, especially in the first half (and even more in the middle third), where nothing has been built up. I would hope that any edit scales the action down and lets things breathe a bit more. The battles need to feel earned.
Rotta the Hutt. Wow. Interesting idea, but it’s hard to take him seriously. And all the English - I’m not sure it will work if you turn it all into Huttenese, but there’s just something off about it as-is. I do like the idea of his character in opposition to what we know of Hutts.
Speaking of Hutts, I did like seeing the Hutt homeworld. It was more rural than I expected, as the EU had always kind of implied that it was more of a seedy industrial world, but I still liked it. I also really like their use of leftover prequel droids. Nice worldbuilding.
One of the biggest issues you’re going to need to deal with is that this all comes after the epic conclusion of your 6th movie. It’s just anticlimactic in comparison. One of my first thoughts was to re-arrange content to place it between movies 5 and 6, but there might be too many continuity issues to deal with - the new Razorcrest, again Grogu being there, etc.
If you split the content of this movie up and blended it with other content from the series, I think that the hunt for Imperial warlords might go nicely as a parallel story to the cut content about the Doctor on Coruscant.

Anyway, best of luck. I really do look forward to whatever you come up with going forward.