IMO staying with the DV cap might limit the device to competing with glass stem dynavaps. The DV cap doesn't require that much cooling so there's little room to distinguish P3 against a $5 glass tube besides the flavor. I think the market for better tasting DVs is small.
For me personally I can't do DVs anymore. The cap is too restricted. Modern TEDs like the Tempest that hold enough heat to support higher more comfortable airflows are the way forward for me. Since these TEDs make a lot more heat, IMHO this is a better market for distinguishing P3. There are some decently engineered cooling solutions but the market is always hungry for the next improvement in stem cooling and material purity is much more compromised in the handheld market compared to desktop. If you are not looking to design your own head I'd think being an amazing conditioning stem for modern TEDs might be a more profitable place to compete.
