Star Wars was on its last leg when they threw the freaking Ewoks and a second Death Star into it. Everything since has been pure crapola.
You forgot to mention turned Obi-Wan into a freaking liar and manipulator, not to mention implied truth was relative long before ROTS used that stupid “Only a Sith deals in Absolutes” line.
And I’d just leave it at Ewoks, personally. At least the second Death Star had a completely different means of taking it out than the first, so they did that bit right (not to mention made a dang good trojan horse). Probably what sours me to the Ewoks even worse is that Lucas was blatantly trying to shill for the Vietcong there. The Rebels were based on the VC as well, but at least with them, you needed to find the development notes to find that bit out. What I hate more than anything else is depicting communist as heroes and outright manipulating audiences into rooting for the Communists. As far as I’m concerned, Lucas ruined Star Wars the minute he started making the heroes into communists, maybe as early as 1971.