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AirSpout - AirSpout currently looks like a column of air pushing the airbender upwards. I think it should be like in the show where the spout is spiraling upwards.
Talking about spouts, I wonder if SandSpout does spirals around...
Regarding your idea, I think it worth adding. For moderaters pleasants, this should be turn off and on -able in config.yml under the ability, similar to WaterSpout spiral animation.