I've been thinking about the Book of Boba Fett, and an area that gave me mixed feelings. Seeing Cad Bane on screen, live action and having them wrap up the relationship between Fett and Bane made my inner fan glad, however, as a piece of storytelling I don't think it worked as it was set. None of their relationship or history was explained in the tv show, but it was fairly important to the way they interacted, so if you knew nothing about the things from other media it would all go whooooshing over your head like a Tie Fighter. Making that last conversation and fight rather bland and uninspiring.
Compared to Ashoka in The Mandalorian. None of her actual history or backstory was relevant as such to any of her interactions with Din Djarin or within the story of the show. They didn't need to explain it, so seeing her was a good hit for the fans while having no actual effect on the arc of the episode / series. She could have been interchanged with any other random Jedi who survived Order 66. And because of that, putting her in that episode actually worked, and just teased the wider universe.