well that's already a VV device so the only thing moving to say a cool fire would do is give you a swappable battery. I'd recommend something like an MVP from Innokin, or if boxes aren't your style an iTaste VV for your next step. Only purpose of variable anything is to allow you to taylor the clearo to your liking by controlling the power delivered to it.
Prior to VV the only way to get "more vapor" from a coil was to drop the resistance.
