Just caught up on this.
Started really strong, but it went downhill fast after Cottonmouth died. The story started getting repetitive, and the Diamondback stuff was pretty bad, the story, the actor, and eventually, the costume. The Rosario Dawson / Luke Cage pairing is also really bland too (I don't get the Rosario Dawson love online).
I'd probably give this a 6-7.
Not quite as good as DD season 1, but still better than JJ (I couldn't stand any of the characters in that show, Jessica included). Still haven't watched DD season 2, Iron Fist, or Defends, and I'm debating whether I should.