Star Wars has long since gotten too big for its own good, I think; every fan has their own idea of what it is and should be, and no one's going to make them all happy.
Having sat with my TLJ opinions for a while, the biggest complaint I have now, and both times I saw it in theaters is that it's so long. Lucas had really dialed in 2ish hours as a good length for these stories, and I feel like there's just too much happening in TLJ. I don't super dislike any of it (aside from the casino, but probably just cause that's when I check my watch and realize how much time is left), but I think removing a subplot or three would help it out a lot.