Except for that one time in the cave where she shocked the guy guarding the airbenders…

Kuvira attacks Republic City because A] Revanchism (the reason she gives in a speech) and implied B] Because it's the only other place to go for spirit vines.

It's like the cut behind the wall when Tenzin was getting mauled.

1. The mech was obviously foreshadowed by the domes getting taken down; as for building it, I assume it was a parallel project to the spirit vine that Kuvira simply didn't inform Zhu Li of.

This is true; but it doesn't change how we feel.

Cough… they are setting the table for the big finale…

It doesn't look easy to tip over, Kuvira's army would be a major threat even without the mech anyway.

Kyoshi required loads of time to break off that continent, none of which was spent under the barrel of a spirit cannon.

I highly doubt the last one given his initial reaction to being separated from Zhu Li.

Um, yes he is? Unalaq, at least. Vaatu is just sulking.

Cultural Appropriation? That's not a thing. Especially when the culture is basically extinct, it would be like some people dressing up as the Hittites and getting yelled at on Tumblr.

More likely to be the power of a hummingbird mech.

Going into spirit form and take away his love? What the hell have you been smoking?

They used to work for Unalaq, who knows loads of spirit stuff.

"Ok what the hell did Baatars parents do to him to make him such a douche?"

The other nations sent General Iroh's army - it would have been powerful enough to prevent Kuvira's army from getting the city had she not had the mech.

He isn't that strong, plus it has an army at it's feet.

I was actually kinda glad the mission went off well. I mean, how much tension were we feeling right?

Nope.

From the reviewer's perspective, it seems that the lack of a bending battle = immediate downgrade.