But can we talk about LoK for a second?
The top picture is Aang’s four elements avatar state, and the bottom is Wan’s. Notice anything?
Aang’s is round, more defensive, and the air around him forms a protective bubble, just as when he preserved himself and Appa under the ocean before the start of the series. This clearly draws from’s Aang’s nature as an airbending monk.
Wan’s, however, is much more angular, and the air is in the form of a twister. This looks much more like an offensive attack — the angular yet fluid lines of either a firebending or a waterbending attack.