Michael Mann is NOT an action director, per se.
All of his movies, even Heat and Last of the Mohicans, are
character studies where action and violence are a part of the story, but they aren't the
bulk of the story.
I think this is the big misconception about what Miami Vice -- both the show and movie -- Is about. I think the problem is MV is now viewed as a cult-show from the '80s and nothing more, and a lot of people who didn't grow up with it really understand what it was about besides the fashion and rock music.
Also, there were a lot of problems with the final cut of the film as this was supposed to be another three and a half-hour epic like Heat, but the studio said, no way for a summer release title because the studio was targeting the teens -- Which is another idiodic decision in my book as Michael Mann has said time and time agian in various interviews MV was never intended for teens and is in no way a "Bad Boys" clone which a lot of young people are equating MV with because both it and BB are set in Miami

-- And as a result, Mann had to cut out literally an hour of the film and whenever directors have to cut that much of the story out it is bound to suffer in one way or another, no matter what the PR machine tells you.
Oh, well.
I will see it eventually as I never listen to critics anymore as they are often flat out wrong, Da Vinci Code, anyone?
What does worry me as a MM fan is that it looks like this film is going to bomb which means he isn't going to be able to do "Whom the Bell Tolls" as the studio has said if MV doesn't do well, they are going to pull MM from the picture and get a cheaper director... Which might not only make "Bell" suffer, but also be the first in a long series of moves to basically relegate MM and similar A-List, final cut directors to the European/foreign and direct-to-DVD markets like Jan De Bont. Remember Jan De Bont? Directed huge blockbusters like Speed and Twister... Yet then bomed with The Haunting and Tomb Raider 2? He's now back in Germany...
While I agree a lot of persons in Hollywood are over paid... The fact is a lot of movies are failing these days because studios are trying to market them to the completely wrong audience they are intended for,and then blaming the director when they do fail to save face and as I said, ultimately, it results in a Catch-22 of crappy hacks like Michael Bay and Bret Ratner getting all the work and producing a lot of the shallow, stereotypical projects mainstream Hollywood is known for.