My biggest complained about the second season was that there wasn't enough focus on the students and that all the girls had become one dimensional running jokes. So I was happy to see the girls getting a bit more room to show their unique personalities. Other then that, the show sticks with the same formula of season 2.
We do get treated to the show being drawn in 2 totally different art styles for a few skits and it was a funny and refreshing experience but I do prefer the original style of course.
Also something I've noticed is how much this series tries to involve the national Japanese soccer team, I personally don't mind because I do like soccer but I can imagine that the majority of the people watching this show don't really give a single fuck about soccer... or sports in general.