Unacceptable:
Popping and spitting, honest to God, when I first started vaping sub-ohm tanks, I was using Atlantis coils on just about all my tanks, and many of those tanks just could not heat up without giving that one good, loud, HOT POP!!! of juice, right up onto my lips.
The price of pre-made juice. Highway freakin robbery, now that we know about DIY, it costs, what $4 or less to mix up a 60ml bottle of juice? They charge roughly SIX TIMES that for juice at B&Ms. But let's face it, the consumables are where the money can be made.
Non-standard drip tips. Just. Why? Why can we not just have 510s and 810s and be done with it?
Leaking tanks, even the ones with juice flow control will leak if you don't do everything in exactly the right sequence, and dammit, I'm old and can't remember from one damn time to the next what the exact right sequence is. Or if I move from a Kayfun to the Herc RTA, there's a whole different series of shit I have to do to get the things filled so they won't leak. This is why I LOVE top-airflow tanks! And top/side airflow RDAs, thank you very much!
I hate getting juice on my hands!
@Huckleberried I don't like bubble glass, either! Also don't like lime green, army green, flashing lights, plastic, SKULLS (what is the reasoning behind putting skulls on vape gear?), little hard-to-turn battery caps with crap threading, battery doors that won't stay shut/on/clipped, loose pieces and parts (shame on you, Wotofo, for this Recurve mod that I loved, now that it's a month old, its parts wiggle and click like my damn old knees).
Oh and menus on mods (yes, I'm talking to you, YIHI) that make me swear and want to chuck the mod out the window.
Oh and people who know fuck all about vaping passing judgement on my vaping. And the damn legislature in New York outlawing the sale of flavored e-liquid. Fuckers.
Oh and companies like Geekvape, who has been my favorite vape gear company and should know better, releasing a mod like the Aegis Legend with the damn stainless steel temp control not working properly. For real?
Oh and companies that rewrap batteries and then LIE about the capabilities of the batteries.
Getting very nearly mandatory:
Dual batteries in 18650 mods
20700s or 21700s whenever possible, especially in mechs
Rebuildable attys
Stuff that works for more than four months, that you don't have to fiddle around with all the time to get it to work properly