Ahsoka was very annoying from the very start imo, but it all got a lot worse in the beginning of Season 3, just when I had started liking her.
I also thinks the Dathomir Ventress arc is overrated, and my 2 favorites are Umbara arc and the Second Battle of Geonosis.
The thing about The Clone Wars is that it never seemed to make sense with the movies, so I’ve always considered it an “alternate” universe, while 2003 Clone Wars is canon in my heart. If well edited (removing childish moments, removing inconsistencies with the rest of the saga, etc) The Clone Wars can be a gorgeous addition to the collection though.