Here is my prediction, based on the idiotic consumer behavior and naked, raw profiteering seen post-Sandy Hook:
The FDA will publish something that has no chance whatsoever of being passed and/or implemented, and there will be a panic. People will buy up all of the nicotine, batteries, kanthal and pg/vg they can find. Some will be hoarding, some will be hoping to flip the supplies quickly and make a few easy bucks on the panic. In a month, nicotine will be impossible to find....even though zero steps to make it unavailable will have been taken at that point by the US Government. The producers will recognize the market forces, and the price of nicotine, which will be mysteriously all but impossible to find through normal supply channels and snapped up immediately upon any 'limited release,' will shoot through the roof. When the situation reaches a kind of statis, with the FDA backing off the more egregious restrictions and taxes, nicotine and e-juice will remain difficult to find, and the price will never come back down to the 'pre-panic' levels we see today.
And you know who will get rich? Not the short-con profiteers who snapped up all the nicotine - they'll take a bath on their purchase just like the d-bags who bought 40k rounds of .22 long rifle ammo the day after Sandy Hook. It'll be the larger manufacturers and distributors.
Everyone, take a deep breath, stay abreast of developments, read the entire text of everything put out (NOT the commentary attached to it), get involved, stay involved, but don't feed into this. Please. My wallet begs you, do NOT artificially inflate the price of this thing we call a 'hobby' but is in actuality probably saving our lives.