I enjoyed it, but then lifelong comic fan so I'm a sucker for a big team up and I can't deny there are some big flaws.
I found Danny worse here than in Iron Fist, not that I agree with the angry child portrayal of the character in his own series but at least in Iron Fist it was justified if not immature and his tantrums and naive decisions were plot points, here every time it looked like they might have made him mature a little bit they had to throw it away because they needed to move the plot along, it didn't serve as development, he just reverts whenever the plot requires it and after about episode 5 he stopped being a character in the show and just became a plot device.
Way too much focus on the hand internal politics and scenes where they don't like each other, they don't trust Alexandra and are plotting. I figure this is the same problem as the Kilgrave thing in Jessica Jones, you got a big name in the part so they have to have more screen time than their plot really deserves.
The supporting casts, I get for the big team up the secondary casts have to be involved, but when the best you can do with them is put them all in a room don't bother, don't do it just to check the box. They way the various series have Jeri Hogarth pop up when relevant is how it should be done. And Claire just needs to finish her role as Netflix's Coulson and get Loki'd. She was just about tolerable in the individual shows but completely insufferable here.
And I wasn't a huge fan of her during DD season 2, but i'm fairly sure Elektras' accent wasn't that bad it was changing line by line there.