people really underestimate quick feet jolteon. with a flame orb to guarantee the burn, it outspeeds damn near everything. no more getting revenged by scarfgon or scarfchomp, and you can OHKO both with HP ice. quick feet jolteon is the perfect recipient of a tail glow boost or two from volbeat. i've managed to get 2 tail glow boosts numerous times thanks to parahax from volby's priority thunder wave, and a jolteon at a whopping 1400 SpA and blistering 537 speed is NOTHING to scoff at. not even ditto can guarantee the revenge kill since it doesn't copy the quick feet boost which results in a speed tie. it can even BP the SpA boosts to a friend when it's about to die.
True, Quick Feet Jolteon does seem to have it's use, but having to rely on getting Baton Passed boosts seems a bit iffy. Of course a Quick Feet Jolteon could also run Cheer Up/Charge Beam to buff itself, but without Volt Absorb, Jolteon may find it harder to have a moment to set up or switch into things.
I think we should also reconsider what threats Jolteon must face this time around. With Quick Feet, Jolteon can outspeed Doryuzuu under Sandstorms, but can it OHKO Doryuzuu with anything for Revenge Kills? Without a life orb/specs, I find it kind of hard to imagine, especially since most Quick Feet sets are relying on Flame Orbs. Jolteon also will not enjoy taking Sandstorm Damage + Burn Damage + Entry Hazards, so Quick Feet Jolteon seems pretty iffy...
I think we shouldn't overlook Synchonise/Synchronoise/whatever it is. The 70 BP Psychic Special attack that Jolteon gets via breeding. I think there's still research to be done on how it works still, since the description is definitely weird. Apparently there is speculation that it doubles in base power against Pokemon of the same type, and thus 140 BP against all other electric types is pretty decent, especially Zapdos. If it still functions normally otherwise, then it's also good for checking fighting types, though I am not too sure about Jolteon taking an Iron Fist Mach Punch from Roobushin. But if it can, then a revenge kill with Jolteon is possible. Though apparently Guts is his more popular ability, so perhaps Jolteon can revenge kill through unboosted punches.
Jolteon also doesn't fear Burungeru much, but it needs HP Fire for Nattorei. Shadow Ball can handle Shanderaa, but a +speed nature scarfed Shanderaa outspeeds and will probably wreck Jolteon.
HP Ice will probably be more important than ever with the sheer number of Dragons running around. On a Quick Feet set, it is beneficial to be able to HP Ice Dragons who are probably scarfed. Volt Change works well with Quick Feet too, since it allows you to get out even on enemy scarfers through sheer speed.