I pretty much agree, with the idea that I hope Korra doesn't focus too much on the Gaang for the wrong reasons. I really don't like when stories include flashback things or side-stories during the story at hand. It's not really "Korra's Story", then. I dunno, I don't mind the cameos as long as their relevant to Korra's tale at hand. Or if they do have cameos they're not paid much attention to. (Like Katara in that one clip?)