The nostalgia of Cobra Kai has been great. Like you mentioned, cruel summer and other songs scored have been spot on. When I first saw the trailer for Cobra Kai I though it looked terrible, but I have liked it a lot too.

Seems like Ali will be back with her accepting the friend request of Johnny. Since Daniel mentioned that she's some kind of dr, I've heard speculation that she'll play some role in helping Miguel recover.

Season 3 to be released in 2020 sometime.