If they do ban it would make a massive difference. Every established juice manufacturer would have to change their entire business model and, instead of being able to buy a single bottle of pre-mixed, pre-steeped juice they would have to sell a bottle of VG/PG mix plus a separate bottle of flavouring blend which the end customer would mix. Easy. Except...
Not all juices will be good to go in a week. I have found custards need at least a month before they are vapable, but they improve with age - for my personal taste 3 months seems best. I don't vape deserts but I have read they also benefit from an extended steep. Allegedly fruit flavours can be mixed and vaped either instantly, or after a very short steep I don't make any claims of being an expert mixer but in my limited experience ANY short steeped juice is mediocre at best, or extremely unpleasant. This simply isn't the case with professionally manufactured shortfills in my experience and most seem smooth and good to go after adding nic shot/s. I will leave fruits to steep for a day after adding nic, but this is habitual rather than absolutely necessary IMO.
Even if it was good to mix and vape in a week - this is only of any use to 'hobby' vapers who don't mind experimentation. The vast majority want convenience and will bail at the first hint of DIY. Making anything less straightforward will deter most customers.
Yes - manufacturers COULD send out separate bottles of VG/PG and flavour - you should still be able to buy flavours, VG and PG separately, but the cynic in me believes a 'former' vape juice manufacturer who now changes his business to the description of selling 'food product/flavourings' to the same customer base and selling via vape sites/vape shops would be taking a huge risk of having the rug pulled out from under them by the government. Current vendors of VG/PG and flavourings who sell via dedicated, non vape related businesses will probably fly under the radar, but I don't have the same confidence for and 'new' business who just happen to market pre-packaged components as a bundle to vapers, describe it as food/cooking ingredients, but still sell through the same sites/shops not coming under close scrutiny. It is not only about flavour bans - it would also come under TAX AVOIDANCE the moment the inevitable taxes are introduced.
To summarise - even if they could send out a bottle of VG/PG and one of flavour it isn't necessarily that simple. They will have to change their process, to gear up for two bottles instead of one which will involve additional cost, avoid any association with vape marketing - and do this under the nose of two different government bodies - one determined to get them for selling prohibited goods, the other determined to crucify them for tax avoidance.
Reality is unpleasant, and sometimes something that seems simple on the surface can turn into a complicated and potentially dangerous business model.
