Didn't mind the prank call as a cheeky ruse to prevent Hux giving a "fire" order. The problem I had was that Hux would take the call at all. His orders were to wipe the last of the rebel fleet out of the sky. The movie made it clear that there were no more rebels, so you don't need to interrogate anybody to find more bases. Just wipe them out.
I didn't like Luke's complaining because I felt like every scene with Luke and Rey for the first half of the movie was the same scene. "Help me!" "Go away!" ad nauseum. It's bad writing. Scene 1 makes Scene 2 happen with building urgency. If Scene 2 is Scene 1 again, one of those scenes is pointless.
I bought Luke's moment of fear. I thought it was a great illustration of how one *tiny* moment of weakness can be ruinous. Luke isn't immune to lapses of judgement and so I didn't think that was a problem. Luke's characterisation was mishandled, but not because of that.
Milking scene -didn't care.
I prefer Rey with no "special" parents. I'm tired of characters in movies all being directly related (Sandman in Spiderman 3, for instance).
Holdo's drove me nuts. She should have either told Poe the plan or told him, "You're a soldier, I'm the general, you do your job and I'll worry about mine". Either way, Poe still could have gone off half-cocked. In fact, it would have highlighted the problems of his impulsiveness *more* if Holdo was a good leader, but just too patient for Poe's liking.
Everything about the Casino Planet plotline and Rose's superfluous character were aggravating. Rose's idiot move at the end deprived a brilliant character arc for Finn: coward to martyr.
Snoke was boring. I don't miss him. It was a great scene, too, which the movie needed more of.
Phasma was boring, too.
I prefer Luke as the main character. I'm sorry he's dead. That said, it was epic. If they had to kill him, they did it well.