I have been vaping for several years now and still embrace most permutations on vaping. By day, when I am at work, I will vape 12-18 mg liquid in protank type devices on Ego Twists or other similar closed tubed mods at around 9 watts, and by night I will vape 3-6 mg juice between 50-100 watts on a sub-ohm tank or rebuildable tank atomizer.
In every respect and variation, WTA always has a role to play. When I get an itch to vape something that will calm me a bit and knock the edge off a cigarette craving, and give me those alkaloids that are missing from standard juices, I will mix in Unflavored WTA (I still have Aromae-juice WTA I purchased 2 years ago) 26ml with a 0mg nicotine juice and vape at 3mg WTA strength. So WTA still has a place in all kinds of set ups and I use it from time to time in my high powered devices, albeit, mixed so the juice has 3mg or 6mg strength.
I still have some of that good quality unflavoured WTA juice I purchased from Aromae-Juice 2 years ago and its still as good as the day I got it. My unflavored WTA lives in my fridge.