*cough* That is an unfair and inaccurate characterization of both "character driven" and Scott Buck's Iron Fist. Iron Fist's flaw was not that it was "character driven", it was exactly the opposite: none of the characters had a coherent character to drive the plot at all. Stuff happened, with no attention to making the characters likable, consistent, or compelling.
Also, *every* movie should be "character driven". "Character driven" does not mean "boring conversations in quiet rooms", it means that every character is a person, whose needs and wants, virtues and vices, define who they are and what they do, creating the conflicts that drive the story. A good martial arts film is all about characterization, its just characterization as communicated and dramatized via balletic fight scenes.