Daredevil, Jessica Jones , Luke Cage and Iron Fist are good TV shows don't understand me wrong. But once you take a deeper look, you will see, that the stage set looks cheap, that all these shows have the same structure
- you have an opponent (which change during the show)
- you see the story of your hero
- the hero have a short romantic affair
- every episode has some fighting scenes
- one of the "main" character dies
and at the end your hero wins the battle.
And to be honest the story (of each series alone) isn't also not that great.
The only thing that is cool is that there is a "main" story that connects every series and that all series are in some kind connected so that Luke Cage for example also helps Jessica Jones or that the nurse appears in every marvel series (so far).