Her sendoff in the finale of TCW season 5 was already a good ending, but she came back in Rebels. Her defeat by Vader on Malachor made up for it by being an even more emotional ending for her. But then she even survives that, to even after ROTJ! Then Filoni doubles down to before all this and says that Ashoka actually talked to Anakin after she left the Jedi Order, they apparently made up, and she led the Siege of Mandalore against Maul.
While I agree she should have died on Malachor, her first exit at the end of season 5 was never supposed to be her end. They were cancelled after the Disney buyout and luckily for them season 5 ended where it did. The reunion with Anakin and the final battle on Mandalore were all part of the original plan, we’re extremely lucky Dave finally got to finish it.
I’d also like something like that to happen, but I’m cautiously optimistic if it can be pulled off convincingly. Disney won’t keep pouring unlimited money into this show, so the effects will get more “TV” as the show goes on. De-aging effects look great in high-budget movies, but I’m not so sure if it can work here.
They were able to deage Anthony Hopkins marvelously for Westworld on a TV budget.