I've read all 117 pages of this (yes, I've kept a phone browser open and check it every few hours, and read to catch up), and I'm seeing a trend:
If the regs are followed, literally, as written, then nearly everything in our daily lives is now a "regulated tobacco product".
The government obviously tries to do some silly things, but history has shown us that "silly" nearly always fails, sooner or later. If they try to regulate everything, they'll implode and these regs will become a historical joke, in time.
Taking the current market, and limiting the regulation to what is "possible" to enforce, and I see only two changes that will occur.
The BT cigalikes will survive, unchanged, because they are the biggest single products in the market, and BT can afford to keep them afloat.
Our mods, attys, rebuild supplies, batteries etc. will all survive, because they all have a legitimate second (in some cases, FIRST) purpose, and a shift in marketing removes them from the discussion.
The only two things that I see that will change and/or go away are ready-mixed juices WITH nicotine (hard to find a legitimate second purpose for them), and the cheap blister-pack starter-kits sold in gas stations under brands like "VapeKing" or whatever.
The ready mix juices will be the biggest burden, until we come up with a work-around - unflavored nic in ready-strength bottles you mix 50/50 with flavor base etc. Until the FDA bans flavored nic altogether, there WILL be a workaround.
The cheap stick-battery/cleromizer ban may not seems like a big deal, at first, to us, because most/all of us have moved on, but the real hardship it creates is by removing the gateway step between the cigalikes and the more advanced stuff that actually works.
Cleromizers are an important step in the process, as we know it. Almost everyone tries a cigalike first, realizes it doesn't work, but sees a twinkle of hope in it.
The cheap starter kit is a logical next step that folks can take, with little effort or commitment, by going back to the same gas station and getting the "bigger one".
Once they've taken that next step, even if it, itself, is not totally effective, they get a view into how big a difference a step up in gear can make.
Then they visit a vape shop, get an education, and leave with something that actually can work. Then they start quitting for real.
We're losing that important stepping stone. Without it, many will try the cigalike and give up right there.
If we have a hope of winning back that ground, we're going to have to take all the workarounds for the products that actually work well, and market them creatively.
A shop owner may not be able to tell someone that vaping helps quit smoking, but what is to stop them from advertising, boldly and without shame, that they can help you quit through aromatherapy. "But, whatever you do, do not, I repeat DO NOT put your mouth over the atomizer and inhale directly."
Figure out a good way to get the customer to add nicotine to the aromatherapy scents they leave with, safely, and we're back to business as normal.