Their cheif mistake was putting the films directly after the OT. It was just a mistake. It ended where it was supposed to and their focus on trying to deconstruct that whole universe, without any actual deconstruction that made sense (For instance, somehow destroying a few planets took down the whole rebellion? What? The universe is massive and likely partially being out from under the Empires thumb would have created a far stauncher opposition than a few planets. Maybe someone can explain that one to me better, as it may be covered somewhere.) But they took a vastly expanding universe, one that arguably the Prequels really laid a path for. Regardless of how good it was, it introduced a lot of factions, areas and really opened the universe up. That and TOR.
Anyway my point being they reigned this expanding universe back to a large degree, made it really myopic. And set it in a place where characters were familiar, for nostalgia reasons. But I think was a mistake, as they should have developed their own chunk of the Star Wars universe instead. Set a few hundred years after maybe if they really wanted to reference it. Luke, Leia, Han, Chewie etc. Are legends, their name well known or whispered depending on your story direction. Maybe they reference them through Holocrons, or records. Little easter eggs etc. Making that whole dynamic a focus, for me just never sat right.
I wanted something new.