Lol, I was just about to start this . . .
S1 was painful for me to watch but I wanted to know for Defenders . . . my wife watched with me, but she hated S1 and constantly mocked Danny in Defenders- sort of like the Muppets hecklers. BUT, we both felt he was a better character in Defenders and having him show up to help in Luke Cage for a few episodes really did work at helping rehab the character.
I am to Ep8, and I like this season. Its is more cohesive as a story and uses some easily identifiable tropes so people can place the themes even with the story twists. Everyone is WAY more developed in this season than last, and its not because of the previous season- its almost in spite of it. My wife blurted out last night in either episode 7 or 8, 'that's character development.' I am really liking what they are doing with Ward and wondering if he is going to become another crossover character in the Defender's support network. Honestly, it drives home just how badly they mishandled the story of S1.
Crossover characters- I really like the way they are writing Misty and I think the actress does a great job. She had some great jokes about her arm but you can tell it its still a sore spot even though she is adapting. I do not know if any others come in but it was great to have Karen show up with Punisher, Foggy for Jessica, and in S1 Hogarth coming in to help Danny though being less evil than she comes off in Jessica Jones. The bad guys who also cross over- Turk has been funny, the leader of the Hatchets was also in Daredevil IIRC. Madam Gao rocks, I honestly look forward to her appearances because of what stunt she pulls off- she is Yoda!
Finally MCU continuity . . . we heard that Marvel had sort of given up on Agents & Netflix properties weaving into the MCU- I can still hope it does for the greater story BUT . . . Iron Fist had a Sokovia reference so far, and still seems to be operating in the same world though it might be time for a Spiderman reference!