The Biggest YYMV about Korra is that it is not Avatar: The Last Airbender
, and it is up to the individual whether this is a good or bad thing. Avatar
was a potentially apocalyptic story about the end of the world and the development of the characters as they tried to defeat this overwhelming enemy that was the Fire Nation. Korra
originally deals more with social upheaval and evolution, and focuses on how the world is going to grow now that it is no longer in danger of being destroyed. Korra
is, especially if you read some of the Word of God
materials, designed to be the equal but opposite
instead of re-hashing old materials, and thus it necessarily deals with very different characters and issues.
Korra is explicitly Aang's opposite. Where he was spiritual, diplomatic, and best at air bending but had to painstakingly learn everything else, she is brash, a combat junkie, and intuitively learns three elements by age 4 but can't get air. Violence was Aang's last option and her first, but while he had the Avatar State to fall back on when needed she lacks that spirituality and relies on her own skills. And while Aang never wanted to be the Avatar, Korra never wants anything else.
Asami serves as Zuko's counter—he defined himself by his family and past until the very end while she defies her father to do the right thing
. Both come from upper-class lifestyles, both are on the outs with distant fathers after losing mothers, and both tend to be broody and confrontative while saying more with silence than words.
Mako counters Katara. Where she was the Team Mom
he tries to assume a similar position with debatable success. Katara was consistently shipped with Aang with some Zuko teasers; compare the Mako, Asami, Korra triangle that falls apart. Where Katara kept the group together, Mako distances himself from the awkwardness through his job.
Bolin is like Sokka: always cheerful and upbeat but never quite as self-confident as he seems. See first how he was with Eska (anti-Yue) and then Opal (Suki). He always seems to get the short end of the stick but is still a valued friend.
If you go into this with your mouth set for Avatar
Season 4 you will hate Korra. It is about the new
trials and tribulations of the next generation. Read the Word of God
stuff to get some good subtleties.