One of the major issues that I had with the show (and one of the very first things I tackled in my personal edit) is that Leia is portrayed as being so sassy.
This is a major misunderstanding of what makes a strong child character. Even if the writers were trying to make this some sort of an arc for Leia, it just doesn’t sit well that she would be so disrespectful to legitimate authority and, at the same time, so wise beyond her years. I was fine with her telling off her cousin, but her rudeness to her mother and to Obi-Wan made her virtually unlikeable. And Obi-Wan was basically sealed as a loser by constantly getting dissed and one-upped by a spoiled child. Fortunately, with a number of small cuts here and there, Leia came much more in line with what we should expect from her — gutsy but classy, outspoken but just. She can still have a character arc without her starting out as a total brat.
Enough of my ranting!
Overall, I’m really liking your Legends approach. Can’t wait for more details!