I mourn the character Ahsoka could have been every day.
She's such a perfect character to explore the Jedi that were forged in the war (that was created to destroy them). The only character where this is mildly relevant is Cal, I suppose, but he was too young to have been truly CREATED in war the way Ahsoka was ESPECIALLY because of who her master was.
Anakin taught her to be a warrior, a commander, a soldier. He taught her to be one of the most proficient martial artists in the order but almost entirely neglected to teach her what being a Jedi is actually about. She learned some of those lessons through other characters (Aayla, Plo, Master Sinube etc.) but in her 14-year-old mind Anakin was still the "cool" master who while being non-traditional still taught her everything she needed (not true. He was already a mass murderer who had slaughtered children much younger than her before they even met.)
But she was a KID, and he was her older brother. Of course, she idolized him and was willing to overlook the issues that he clearly had.
And then the order falls, and suddenly, she realizes she has no real connection to their teachings anymore. Not in the way she should. She can kill an Inquisitor without a weapon in 3 seconds but she has no idea how to healthily cope with what happened to her because Anakin's method of helping her through the war was distracting her and framing it like a game (well-meaning but ultimately damaging).
He could never teach her to let go because he wasn't able to either. Other survivors remember their masters teachings about being able to move on and find new light but the example Ahsoka's master set was denying that anything bad could happen, taking revenge if it did and clinging onto everyone he loves in terror of it happening again.
This is also why I think Ahsoka saying "then I will avenge his death" / "I'm no Jedi" is SO interesting because unlike Luke and Obi-Wan who were willing to accept that Vader IS Anakin and let go of their fear and hate, Ahsoka accepts Anakin's false framing of him "having killed Anakin", so that she can view Vader as a boogeyman and let her anger and pain out on him without having to accept that he truly is her master.
She rejects her Jedi teachings and culture in favor of a brother who betrayed her. She would rather throw away the title and values of her murdered people than blame Anakin for what he did (this is also continued in the Ahsoka show. He was not a good master, Ahsoka).
I WISH that her show was set after Malachor and was a character-focused story about her being able to let go of Anakin and accept that he wasn't a good person and putting in the work to embrace the Jedi's teachings and be able to become what Anakin never could.