I dont think we'll see a turn around in terms of what new devices are coming out, until regulated devices can match what a mech does with a fresh battery and a .2ohm coil. Thats really the lowest most anyone builds unless its for showing off your 1337 skills for fun. Once we have regulated devices that can do that(call it a DNA100), THEN I think we will see one of those turn arounds like we have seen with other vaping styles.
Already exists, not very popular.