God that pissed me off. Some guy that has never air bended is suddenly a better air bender than Tenzin, the Avatar, and 1 of 2 throughout history capable of going DBZ mode. So, so convenient. I liked what they did with Bolin and lava/metal bending. I thought it was tacky for Mako to lightning bend out of nowhere, but that was a smaller issue. Also thought that every episode was paced pretty well, some plot would happen, then a fight, then something to set up the next episode.
Overall, I'm not sure how I feel about it compared to other seasons. I enjoyed it and will definitely watch season 4, just because I like the universe and animation style.