SPOILERS:
I can't believe Lin lost her bending. It is a real cop out if Book 2 is all about Korra finding a way to get everyone's bending back and have it restored, and as much as I want the bending removal to be permanent, I REALLY hope Lin gets hers back. It sucks having Toph's daughter lose her bending. Her own flesh and blood, who she taught to metal bend and who could "see" the way she could with her vibrations. Now gone, just like that! D: