My buddy likes to point out that there's a bit of a plot hole between the prequels and originals - made worse with all the expanded material (both original multimedia and CGI) - Owen & Beru.But even so, Anakin wouldn't need to kill Ahsoka at all, thus avoiding further corruption for Anakin (even though it doesn't matter how much time they spent in the Clone Wars). Her death could've been caused by Dooku, Grievous, anyone really, but it would serve as something that would make Anakin's fall more believable. It would cement him with a tremendous hate and distrust for the jedi and the Republic rather than what motivated solely by ego due to them "not respecting him". Seeing her die would serve as the perfect catalyst to make him even more overprotective of Padme and even more desperate and paranoid. He could even blame Kenobi for her death, since unlike his mother, you could have Kenobi right in the middle of the situation, make Anakin resent him for it and thus make their duel more meaningful. Having Ahsoka walk away just for the sake of living doesn't add anything to her character or story as I've said in my previous post where I state the following:
Of course a lot of that is due to the films themselves since somehow Vader never thought to go check the house he knew his stepsiblings were staying for Obi-Wan.
His fix fic is that rather than Asoka, Beru should have been in her place and as a literal lost little sister (Beru Skywalker). Then rather than Rex, Owen should have been a regular soldier and war buddy of Anakin. In both the movies and the shows, this would give someone his own age to bounce off of and given the audience a viewpoint of how everyone else in the galaxy viewed the war outside of the Jedi, politicians, and clones. Eventually he would marry Beru and give Anakin more to lose in the war than just a wife and child. Through their friendship, we could watch Owen's horror at Anakin falling from the friend he used to know before he goes fleeing to Tatooine for refuge.
Then at least we could smile in the episodes when Obi-Wan shows up and drags Anakin and Owen off on a new mission for the war. Because then we would understand the line "He feared you might follow old Obi-Wan on some damned-fool idealistic crusade like your father did."
He should have sent Thrawn off into the unknown regions and then the sequel trilogy should have replaced Hux with him. (I mean you can still keep Domhnall Gleeson as the actor - paint him blue and I think he'd make a dang fine Thrawn.)You know tbh I kinda think Filoni wrote himself into a corner by introducing Thrawn back into canon in the first place. They had to find some way to get him out of the picture the moment he repaired and I doubt they could of gotten away with Rukh assassination him again since they would of had to convincingly jam the Noghiri subplot from the original 3 books into 1 season that already has a lot of subplots already and I don't think they could of used the original EU reason of Palpatine sending him to the unknown region since that would just mean letting others explain what he was doing in the ST or aftermath.