3? Are you serious? I find 12 to be a challenge!A nicotine level of less then 3mg would a challenge to many vapers! And you can bet your bottom dollar I will be picking up another liter of 100mg nic next sale reserved for "bumping up" any store bought juice! Not sure if nic base can/will escape FDA's "non-addictive" limit.
FWIW, there was no talk of lowering nic content in vapes. It seems the strategy is to make combustible cigs less-than satisfying so that us hard-core nic addicts will switch to some other way of getting it that's less harmful. I really don't know how effective this strategy will be. If I was still an unrepentant smoker, I'd probably be looking at what's involved in growing my own tobacco in the near future.