Most importantly, for me, it redeemed Hayden Christensen as Anakin, something that this show and the Obi-Wan Kenobi series worked together to do. The character of Anakin was already mostly redeemed through the Clone Wars series where his character was given the time to slowly establish the problems with the Jedi Order and Anakin's need for more than the Jedi could provide. However, that still left the live-action Anakin lacking, perhaps even more in comparison. These two series have really changed that.
I love the Obi-Wan Kenobi series. Having watched it again this summer, I feel that the story holds up well (especially with my head canon that young Leia was already able to unwittingly tap the Force for subtle mind-tricks), and it fills some of the plot holes that were missing between the prequel trilogy and the original trilogy (specifically, why Obi-Wan was so convinced that Vader had "killed" Anakin, why Vader said that "Obi-Wan once thought as you do" to Luke, and why Obi-Wan knew that Vader and Anakin were the same person in the first place). However, for me, the greatest part was having Christensen step back into the roles of Anakin and Vader and do so quite convincingly.
This performance led to his role in Ahsoka, where Christensen gets to be Anakin at multiple points in Anakin's life. He shows up as an Anakin in the early Clone Wars, an Anakin just before he becomes Darth Vader, and an Anakin after the events of Return of the Jedi. Each time, his performance was amazing! Considering the hate (which comes from the Dark Side) that some fans (sadly, including myself) had for Christensen's performances in the prequel trilogy, I am so glad that he was willing to come back and reprise his role--improving the entire story. For my part, I regret the time I wasted not liking what he did before. Sure, parts still make me cringe, but some of that was jealousy (also from the Dark Side), and some of that jealousy was from having written (with help) a script for Episode II. It was a version of the story that I really liked (and still do), but I had to "learn to let go of the things that you fear to lose."
I'm glad that these new Star Wars shows have helped me do exactly that.