I have to say that so far it isn't bad, but there were definetly things I didn't like. But the major pro was the conflict with Korra's dad's backstory, and the whole evil uncle thing. It was great.
However, I'm sad to see that Osami and Bolin have really minor roles it seems. Their "adventure" literally just seemed like filler to fill up an hour, and Osami didn't even show up for the spirit fight!
Also, the fire ferrets broke up. Just no.
And Korra seemed to be on her period or something in this episode. Literally, she was really bi-polar the whole time, and had no judgement. She wasn't the Korra we know and love, and it really made me angry.