Bevendre

Katara needs to come back in the next season of Korra, not just to help heal the damage to Korra’s body left over from the events of season 3, but to help her through the emotional and psychological turmoil she’s dealing with.

Korra’s already sought help and advice from one member of the old Team Avatar in a time of need.  She needs help from the person who was closest to Aang during her recovery.

Also I just want to see more Grandma Katara.