What should Su and the world leaders have done regarding the Earth Kingdom in book 4?
I know Tenzin and Raiko approached Su requesting that she lead the charge to reunify the Earth Kingdom and lead the forces charged with that mission for the interim to stabilize the nation and then put Prince Wu on the throne.
When Su declined their request what should have been their course of action, since clearly Kuvira was not the right choice?
It was a very difficult situation and hard to resolve for sure.
Maybe Su should have led a delegation of leaders from each of the states to ba sing se along with support from the united forces, fire nation and water tribe militaries and the new airbenders for defense support. Maybe as the beginnings of democracy and confederation.