<p>I was thinking the same thing. They may have the most potential out of any bender but live in moderation. I always thought they would be able to levitate people or manipulate the air around people. Maybe have some type of "Force" that they can use. I do think air has the most potential out any element, maybe that's why only monks posses this power. </p>

I am quite certain that suffocation is already an airbending technique though it would be forbidden

<p>I've always liked the idea of airbenders manipulating the moisture in the air do they could make it rain. Not like water bending, but the could make it rain to say, get water to drink or for a water bender to bend in a desert or something </p>

<p>one idea I have been playing with around with, could an earthbender effect bone? in himself and others... strengthing his own bone, even mending them to when they break.   </p>

<p>Considering bone is neither earth nor earth like, rather living tissue, I doubt it. Its a similar principle to why they can't bend wood. </p>

<p>What would be cool was if fire benders could overheat you without showing it was them and kill people when it was looking like a fever killed them. Also, when aang blows his whistle loudly, it's not sound bending. He's just blowing a lot of air using his airbending enhanced breath. </p>

<p>A fire bending technique I thought of is to heat fire to such a high temperature to create some type of laser or heat ray kind of like vaatus hyper beams but not purple also since fire is energy the theory is somewhat more plausible than A giant flatworm kite spirit shooting fricken laser beams out of his head! </p>

<p>bonebending could be possible because the bones have minerals which are earth and may be bendable but only the deranged would practice that art. I'm pretty sure each element has it's own deadly sub-skill to even out bloodbending like shadowbending that would be an amazing sub-skill for bot air and earth (shadows are on earth and are cast from the air) suffocation for air. But what deadly sub-skill for firebending? besides combustion isn't too dangerous if you're careful. </p>

Likely rising an opponents body temperature to the point they catch fire

<p>Fire bending could also have a form of smoke or ash. even though smoke has air and some burning material, it could be used to blind an opponent or suffocate </p>