Useless to drop this question in this worthless thread, but why the fuck did Korra let Zaheer keep his bending? I mean if she can restore it to people, doesn't that imply she learned enough energy-bending from Aang to learn to suck it out of people too? Not to mention the fact that she was constantly blowing new holes into the spirit realm.
The whole bit in season 4 is that she had PTSD from him nearly killing her, why did she allow an incredibly powerful and dangerous bender to retain his bending? Shit, why was he imprisoned at all and not executed? He admitted to murdering a queen, that should be plenty enough grounds for execution.
