Overall, I give The Ninth Jedi a thumbs up.
It has succeeded in creating interesting characters, in telling a fresh, elaborate story in long form, and in treating a theme in a new way that's been critical to the entire franchise since the OT, the theme of redemption.
The premise that fallen Jedi can be fully redeemed, this time in life, is a very serious idea that deserves serious treatment, or else it's ridiculous and absurd. While I don't consider The Ninth Jedi to have gone all the way to give due weight to all of the factors that are essential for considering somebody to be redeemed, nevertheless Mitsuyasu Sakai deserves credit for clearly identifying and focusing on the theme of redemption.
There were a few plot and story issues, but none of those were fatal to the overall story.
Something that likely would have benefited the presentation is more frames per second in the traditional animation, but I expect that that is a cost issue. In terms of what was there, sometimes the artwork was extremely beautiful.