Now that Bulla's recovered from her injury, she can be a durable sparring partner for Korra? Bulla's actually pretty freaked out by a lot of things, so she could be easily talked into going on a mission just to put her excess energy into something.

Konan will continue to help Rapunzel learn how to throw shuriken and perhaps start teaching her how to be stealthy? IDK. I like Rapunzel and Konan CR, because Rapunzel is one of the characters that Konan feels protective over, and who draws her out of her shell.