Thoughts on aura also literally being aura(slang)? As in the cooler you are and the more feats you have the stronger your aura. Getting badges, catching legendaries, being a hero or villain, all of these things improve your aura because reality itself respects impressive feats.
It doesn't give control of aura, but just by having a stronger aura people will naturally respect/fear you. It's also a pseudo tie-in for badges being required for powerful pokemon to feel like listening to you--earning badges literally makes you intuitively seem more impressive. Also under these rules degenerates innately lose aura since their fetishes are cringe.