Ironically it was the one with the most high-profile guest stars--Jack Black, Lizzo, and Christopher Lloyd. The plot centered around droids going rogue and what not, the concept wasn't that bad but the execution was just horrid. Doc Brown deserves better than that. That's the only one I truly disliked. The rest seemed to follow the usual plot of "Oh, you want something, Mando? Okay, do this one job for me and it's yours!" pretty well.
Book of Boba Fett and Obi Wan have been pretty meh. I really thought Obi Wan was just unnecessary. They need to move on from Darth Vader, the fact that they're going to try to keep the character going by using AI instead of James Earl Jones is just f***ing lame.
Ahsoka has been okay, though I felt like you had to have watched "Rebels" in order to really be invested, and I didn't. Also, the best character in the whole series was played by Ray Stevenson, and he's dead, so I don't know what they're gonna do there.
Apparently Dave Filoni wants to wrap everything up with a big crossover film, guess we'll see what happens.