I can see going with something better than a 510 connection , but getting everyone on board is dam near impossible , I know that the cartridge design is probably worlds apart but to me it just fixes what ain't broke .These device makers seem to be trying to get other vendors to customize around their products. This cartridge dude uses a kayfun who will also need juice makers to blend around his device. Provari has that hybrid thread on the P3 seemingly to lure atty makers to design around their thread. It's a race to standardize around their design, thus locking up segments of the market.