In my opinion, it’s better to keep as much as possible or the flashbacks and cut the whole Hera/NR subplot.
In the end, the NR subplot is just a filler, and it was one of the weakest points of the show. I guess most of fans didn’t enjoy it.
On the other hand, let’s be honest, people love the Anakin stuff, and those flashbacks were important I’m terms of the “Lesson” and Ahsoka’s character development. Also, if you take in consideration viewers/fans who never watched TCW, those flashbacks add a lot in terms of Ahsoka/Anakin story. I understand that for the sake of a coherent, well paced 3h movie you have to trim stuff, but I in my opinion you should keep this flashback stuff, as much as possible.
And again, Hera/NR stuff was really weak and in the end turned out to be a useless filler.
EDIT
I’d be happy to watch the rough cut of this 😉 I ll have to spend 2h in a train tomorrow anyway 😉
Yeah the Clone Wars stuff was one of the best parts of the show. I think I’ll stick with my current edit of those. I’ve shortened the scenes as much as I can whilst maintaining the story.
The New Republic stuff is a really difficult one. I agree that it’s a relatively weak part of the show. However, without some elements of it there isn’t anything to plug a couple of time gaps in the Seatos story. That’s fine with a TV show, but with a movie it’s obvious that something is missing. And there is the issue with Ahsoka’s exit from Seatos. I’ll render the rough second act and send you a link.