First of all, congrats on lowering the nic. I don't know how sciency this is, but I think I've read that straight nicotine liquid has a bitter flavor, which would, I assume, alter the flavor components of a juice. The trick, once you get to 0mg, is stick with a 50/50 or higher PG blend than one that is heavier on the VG. Also, I have found with some brands' buttery dessert and tobacco flavors aren't as strong once you get to 0mg, but fruity or menthol flavors are amazing!