I think much of the idea of all the Netflix shows is that they are very "street level", and assume that issues of the world at large are rather lost in the local concerns. "Who cares about superhero registration in Washington? I'm not a superhero, or in Washington, I have this crime lord trying to lean on my business that is just scraping by as it is!"
Marvel movies have so far always been chronological. And according to a wiki Cage plays parallel to Shield season 4 and after Civil War.
I loved the first six episodes, and Cottonmouth was my favorite antagonist. The rest of the season was just alright. Diamondback was absolutely horrible and ineffective, and seemed opposite of a criminal mastermind and leader, sort of like the 1980s GI Joe villain Cobra Commander.
The show is kinda a sequence of seeing people's (life) plans derailed.
I liked Cottonmouth much better then Diamondback, too. But I am not sure there is much they could go with there anymore. The moment the two want to confront each other, the story is over.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.