Just finished watching the beginnings two parter episodes, and have to admit it is by far my favourite episode of the Legend of Korra saga and ironically it involves not Korra but the first avatar Wan.
It has to be one of the most epic origins stories I have seen to date, at least I found it to be very cool, and that ending really made me feel bad for Wan a character that I had just met.
Overall I give it a 10/10!
One thing I didn't understand was that by imprisoning Vatuu did Wan succeed in preventing the conversions ?
Or for it to happen the north and south pole have to be unlock which is what Unalaq is doing.
I like the idea of Unolaq and Vatuu joining forces just like Wan and Revaa did, and who knows Unolaq might have grown to like humans due to their destructive nature, so he would be receptive to that idea.