Nozzle concentrator attachment for stock Monoprice

Concentrate air to a nozzle for sharper prints. Want to save a few bucks? Not wanting to go too far from factory specs? The type of person who believes in efficiency?
Rather than have those elaborate circular fan shrouds that utilize the already weak airflow from the stock 30mm fans, why not point it directly and close to the source? And with a large enough nozzle? Seriously though, I've had a noticeable consistency of prints after installing this.

Attach to the printing block using either