All of the above. Where do I start:
Paul Feig's vision for what this movie should be is all over the place. The library scene in Ghostbusters sets the tone: ghosts should be spooky and creepy and we are going to play this thing straight up. The rest of the movie takes ghosts seriously; they're scary and a real threat that needs to be dealt with by our heroes who get to be funny, and make fun of situations they find themselves in, but they exist in a believable reality. In Ghostbusters 2016, the opening scene is played like an SNL sketch or something from Scary Movie: it feels like it's setting up jokes (especially because the tour guide is a comedian). When it attempts to take a spooky turn, it doesn't work because the right stakes haven't been established and then it's further undermined when the scene ends with a "wink at the audience" joke. That's basically how the rest of the movie plays.
I don't know what Kristen Wiig or Melissa McCarthy are doing in this movie, aside from having a history with Feig. In Wiig's case she doesn't get to be silly, clever or funny in any way. She's just the nerd. McCarthy is essentially the straight person of the bunch and that means she doesn't get to use her physical or self-deprecating comedy at all. You've cast two of the more popular (if not THE most popular) female comedians and waste them both.
Kate McKinnon is kind-of sort-of "crazy" but it's a caricature. Not funny or endearing just totally forced. She's getting the most love from critics, but that's probably because she's gay (both in real life and in the movie) and there are lots of assholes who like to heap unnecessary praise on people simply because they're a member of a minority group. Here's a good example of that: http://www.wired.com/2016/07/kate-mckin ... reciation/
Speaking of caricatures, Leslie Jones might be THE most token black character I've seen in a comedy in ten years. It's as if Paul Feig directed her to be more over-the-top with every take.
"Awwww, Hell Naw!"
"It's Patty's World, baby!"
I felt I was watching a female Terry Tate. It was ridiculous.
Chris Hemsworth didn't "steal" the movie as some reviews claim: he was part of one pretty funny joke, and completely one-note otherwise. A male "dumb blonde" caricature, but it's funny cause it's Chris Hemsworth, right?!
This is one of the worst scripts I've seen made into a franchise movie. The characters have uninteresting motivations; the villain is shallow, boring and his plan makes no sense; the secondary characters are all useless; actions people take defy logic; and the last act is total schlock.
The dialogue is sloppy. There are exchanges between characters where the lines they say to one another have completely different subjects. I mean something like this:
Character A: We need to find out the source of these ghost portals.
Character B: The mayor is totally making us look bad.
Character A: I know, this was the best chinese food!
This isn't played for comedy and is not a function of poor editing, it's part of the same take. The editing is terrible too by the way. There are moments that are played to be spooky, like the opening scene, but they never hit their mark because the film is all over the place.
The cameos? Distracting and stupid, especially Murray's. They're all winky and jokey aside from one near the end, which I didn't mind. The music? If you haven't heard the song here's your warning and the underlying score is forgettable. There's a few references to the original theme but that only reminded me of a movie I would rather be watching. The FX and ghost design? Outdated and boring.
Does the film do anything right? Yes: the 3D. It pops out of the letterbox frame and while it's a gimmick it was the only part of the movie that entertained me. I never, ever fall asleep in movies but this was so boring that I had to stop myself from passing out.
There's really nothing material that Ghostbusters 2016 nails. It's a disaster. Feig's worst film by far. I just hope it bombs, which is possible since there were only 20 people in my theatre, so any sequels can be prevented.