BT is a scary elephant in terms of competitiveness. They will either drive the product to be competitive, lowering the price of vaping by offering free this and that to get people to try it, or they will gain market share by undercutting mom & pop to the point of profit loss.
I don't see them developing technology that much farther than that which already exists, but you never know what can be done to make the product fool-proof and easy to use. I kind of hope that they stick to pre-filled carts and they probably will until people learn that one tank can be refilled over and over at far less expense. I don't see BT sticking to a product that is just a learning curve that leads to real vaping. \\
In any case, independent vapor stores will have to be on their toes to outsmart BT.