I watched one episode of season 3 before I bailed because it kept a lot of the things about the previous seasons that annoyed me were still present. So now I've decided to start again from the beginning and watch the first two seasons in quick succession to see if it helps to have familiarity with everything.
So right now I'm about 2/3rds through repeating Season 1 and sweet jeebus I had forgotten how much I detest Miss Martian. Everything about her character is infuriating.
Chances are I'll end up going through the 3rd season when I get there, but I remember loving season 1 when it was initially on and now that I rewatch it I feel like even my enjoyment of that season was overstated.