If you’re still looking for TotJ inclusion thoughts, I finally got around to watching it so I have input now!
This could’ve already been brought up but I love the idea of incorporating Life and Death into the opening episode as intermittent flashbacks, sorta like what Arrow did with the island in its first few seasons; something that matches the beats of the flashback to Ahsoka’s first mission as a Jedi. I feel that it would help reinforce the idea early on that Ahsoka is really the focus of this version of the show, especially since—if I recall correctly—that was a big focus and challenge when editing the earlier episodes.
Also having some higher-quality animation in the beginning wouldn’t hurt imo.