Adv CoA can leak out of the body and into objects to cause internal or external/regular destruction. Adv CoA can also be used as force field. Technically it should be some kind of matter then which should be following (at least one piece's) laws of physics.
Imagine compressing an adv CoA force field (basically a sphere) until it's as small as a bullet right into some pipe
--> or a gun.
Then releasing the tension should lead the force field to move into the direction of least resistance
--> right out of the barrel
The same thing should be possible with adv CoC.
Shanks arc will give us haki bullets and literal rasengans
Would you be looking forward to this kind of development? Other developments?
edit: pic