>4. They kept the elderly Leia around, instead of having her do a hero's sendoff at the end.
I don't want to get into a long drown out fight about Star Wars on HN so I'll ignore most of your points, but this complaint has always really bothered me because it shows such a huge lack of human empathy. A real person died, a person that was one of the 4 or 5 most important people to the success of Star Wars. And it has become the standard opinion of her "fans" that her last performance should have been largely thrown away to slightly improve the overall narrative arc of the movies. It really puts into perspective what fans care about. It is all about the product on the screen. Anyone involved in making the product is meaningless. Their only significance is in their role of servicing the product.
I'm glad they didn't re-edit the movie after Carrie Fisher's death even if it created new challenges for the next movie.
It's not dehumanising a person to critique the art she last appeared in.
Rian's intention was to demonstrate some semblance of humanity remained within Kylo. But the optics are that he is truly weak and in the end isn't even bothered much by the (for all he knows at the moment) imminent death of his mother. Had Kylo fired the shot he at least would have surpassed Vader in evilness, whether or not Leia saved herself.
I agree with the "fans" that she should have died in that scene, but since Rian was too scared to snuff Leia before Luke the scene shouldn't have been written in the first place.