How Hollywood can improve its product

Let's start with the actors.  Actors must speak up.  Mumbling, or whispering means we the audience don't hear your lines. Do enough of that and we loose interest in the movie.  And in the same vein, sound men need to take especial care to place the microphones in just the right places.  And when editing the sound track, mixing in the score and the sound effects, don't obscure the dialogue.  Mute both score and sound effects when the actors are speaking. 
   First rule for camera men.  Put the camera on a tripod and leave it there.  Those arty shake the camera shots which were are the rage a few years ago are just plain annoying to us in the audience.  And turn the lights on set ON, before starting to film.  Don't do those black on black shots, with all the lights out.  Game of Thrones, season 6 is a prominent offender in this respect. 
   Directors need to help us in the audience by putting different costumes on the various actors to help us tell one from another.  Don't have everyone wear the same costume, or even worse, same uniform.  They used to have the good guys wear white hats and the bad guys wear black hats.  That was a good idea, and should be kept up. 
   A movie needs a protagonist ($2 word meaning hero or heroine) with whom we can identify, and like.  Don't show us scumbag protagonists, we won't like them, or the movie.  Female protagonists are fine,  Katniss Everdeen and Rey did just fine.  Protagonist needs a challenge to overcome.  And we in the audience need to know what that challenge is, early on, it helps us understand what is going on.  Tolkien handled this in the second chapter of Lord of the Rings, where Gandalf tells Frodo about the ring and what has to be done with it.  For the rest of the trilogy, it was clear to us readers what was going on.  Build the movie to a climax, where the protagonist faces his/her challenge and either defeats it or suffers defeat him/herself.  We like movies where the good guy[s] win, but we will put up with a tragedy if it's well done.
  And we have enough comic book movies.  If you lack the originality to do your own story, there are plenty of good books that have not yet been used as the basis for movies.