I still come back to the movie in my mind from time to time. Obviously Smudger has created an excellent movie to open TCW. In my observation Smudger is focused on the pure quality of the individual movie experience with his - so each is extremely well paced and satisfying standalone. Whereas, I think my focus would be a bit more around treating the movies as part of a very serialised whole, and retaining (objectively weaker) moments that Smudger would have cut for quality and in-the-moment focus.
In essence, any movie I’d make I’d want to keep compatible with my episodic TCW:R, being able to just directly replace a handful of episodes. I think Ahsoka’s early episodes, like Assassin and Malevolence, are important to her arc. I don’t know if you need the Malevolence itself, but I really like the Ahsoka-Plo storyline there. I think there’s a plot that could work which uses the 501st trilogy as the spine, with Assassin’s story about Ventress grabbing Gunray as the prelude to 501st’s invasion, and the 501st’s imminent invasion as the motivator for the urgency which gives Ahsoka the conflict about saving Plo in Malevolence.