Sorry I'm late to the party....
As a huge SW fan, I'm extremely disappointed. It was very disjointed, characters such as Snoke and Captain Phasma are now nothing but wasted characters, Finn and Rose on Canto Bight just bored me, and personally, I hate Rian Johnson's treatment of Luke Skywalker. But above all, it completely discredits TFA. Just my opinion, don't slaughter me for it. We're all allowed to have opinions, right?
I give Rian Johnson credit for trying something different, and there were moments where I was on the edge of my seat. But overall, I give it 2 stars, and that's being generous. But you won't see me signing these petitions to remove it from canon, you won't hear me shouting to the top of my lungs, "RIAN JOHNSON RUINED STAR WARS!!" I think that's a bit overzealous.
Regardless, I can't wait for Ep IX, I think JJ will clean things up, and Star Wars has a bright future. They just missed the mark on this one.