Regarding the image for the movie, is that a leak or a fan mockup?
At least regarding, The Shadow of Kyoshi, I would've given the Flying Opera Company an actual role in the story. It was super disappointing that Wong and Kirima only came in at the end just to instantly get beaten in the final battle.
The Shadow of Kyoshi could had used them to portray how Kyoshi now being a profession criminal would affect image as an Avatar. Also how Kyoshi was manipulated with working with Zoryu that broke her daofei vows would've a stronger impact if Kirima and Wong was there to call it out.
The two Avatar channels I watched is AirSpeed Prime and Antoine Bandele.
She was also Isabella from Phineas and Ferb
I'm a little confused by this question. Can you possibly elaborate a bit more. Like are you referring to stopping an earthquake in its track or dealing with damage based on the magnitude its measures on?