Right? It's so useful.

And Ash is dumb for not being able to come up with a way to combine being Aura sensitive and Pokemon training. Not that that's anything new.

I have a theory, in fact. Any given Pokemon uses Aura, it's how they power their moves, or at least some of them. Aura Ball is a good example, I think. It's just another Pokemon move, but it explicitly uses Aura in a raw form