I agree that season 2 in general improved on the strengths of the first series, though I’ll conceed some of the new faces or references to the lore could became a bit overwhelming for those who hadn’t kept up with all of the Star Wars content (particularly Filoni’s previous animated works). One of the things I liked the most about season 1 was that even someone who grasps only the basic stuff about SW could enjoy the series. Season 2 isn’t as newcomer-friendly in that regard. However, now that the parallel spin-offs (Boba, Ahsoka, etc.) have been properly set-up, the upcoming third season can go back to a more self-contained narrative, even if it’s bigger in scale.
I don’t think it’s confusing for newcomers, just less exciting. I haven’t seen seasons 5-7 of the Clone Wars, so Bo-Katan was just a new character for me, and it worked. And I don’t really know what Ahsoka’s been up to since season 4, aside from the occasional spoiler I’ve had the misfortune to read recently.