NCIS: NEW ORLEANS is a drama about the local field office that investigates criminal cases affecting military personnel in The Big Easy, a city known for its music, entertainment and decadence. Leading the team is Special Agent Dwayne Pride 'King' a native of New Orleans.
The pilot leans cartoonishly on the local color -- it takes only until the third scene for Bakula to mention his gumbo -- to make sure we understand how things are different down in the Tremé (and adjacent neighborhoods).
NCIS: New Orleans is the equivalent of a hand-me-down jacket that's already been worn by two older brothers. By that point, it's stretched out, faded and threadbare.
It's the strong sense of family within the team that's going to keep viewers coming back. These are nice people, and despite the unpleasantness of what they do, it's nice to spend time with them. And that is the key to a successful crime procedural.