Destruction of the legacy characters is at the top of my list. But I’d also place the reset of the Star Wars universe near the top too. Suddenly we know nothing of the Imperial Remnant or the New Republic, and all of sudden we have a first order and resistance, so Disney can be lazy and do rebels vs empire again. We are also lead to believe Luke Skywalker completely failed in rebuilding the Jedi order, and there are no Jedi left, except for Kylo on the Dark Side and Rey on the light. This makes no sense. Disney’s sense of what balance of the force is not George’s. It is not equal light and equal darkness. Darkness rises and light to meet it. Someone was a little too in love with Filoni Mortis.

Most of the issues I have with the trilogy are with the force awakens and the rise of skywalker. There a few only in the last jedi. JJ reset the universe back to where it was in the original film. and ended the trilogy in the same place as Return of the Jedi this is a failure.

I only accept Last Jedi as a standalone and not an extension or Sequel to Return of the Jedi and certainly not a part of a trilogy. But there are actual story beats within it, even if disagree with some of them. JJ did Star Wars greatest hits and tried to make fanfilms. Nostalgia pieces. Without taking any risks. Without any narrative heft, no worldbuilding. No exposition as to why our heroes fell and failed. You just have to accept they were replaced by new Disney heroes.