What I'm making out of trailer

Appa won't be kidnapped (he's at the serpant's pass)

Scaled down MMA sized arena ring like LOK S4. Probably to step away from volume.

Chase will be combined with serpant's pass? (Or suki isn't limited to serpant's pass and has a bigger role?)

No library shown No desert shown No ba sing se

Everything looks.. upgraded. And thank goodness we have more outdoor scenes.

Toph looks amazing, clean earthbending.