Explaining my vote as requested in poll, but I should express that I consider this a pretty minor issue and will be fine with whatever rules are opposed. I'm more afraid of accidentally violating them than I am concerned about the merits of whatever we choose.
I voted none of the above, by which I mean self-buffs plus engineering bombs. My understanding is that this is different from "professions minus swiftness pots", which would include stockpiled holy protection potions, etc.
Engineering bombs should be allowed since they are the only perk of the profession; goggles are a sub-BiS and shouldn't really be considered a perk so much as a stopgap until LFH. Bombs are good but not really overpowered, being a 1s cast for a 1s incapacitate with a short range.
Swiftness pots I am opposed to. It seems like 75% of the pots used are used for solo flag running, which is fine in pugs but shouldn't be encouraged in the AP v AP game. The rest are used as gap closers and openers, which further breaks the closer-opener pvp arms race. In particular, classes with snares (ahem) can't really be swift-potted away from, but classes without snares can be escaped trivially.
Additionally, alchemy also already the strongest prof with 4 stam plus 6 agi, 13 str, or 11 int. Alchemists really don't need swiftness pots, holy protection pots, and rage potions on top of this. And non-alchemists shouldn't have to burn stockpiles to keep up.
Random other consumables, like rum/whiskey, parachutes, arcane cores, sharpening stones, thistle tea, and health pots I would ban for simplicity reasons and to reduce the barrier for entry. I'd like to see this be more about skill and cooperation, not about who has the sickest stockpiles.
Though I reiterate, I don't really care a ton.