Hey.
First of all: Dusknoir. Use the EV spread 252 HP / 252 Def / 6 SpD to tank physical hits. If you don't maximise HP Dusknoir's walling ability will be severely limited!
X-Scissor should be used over Pursuit on Scizor. X-Scissor provides a powerful STAB move which is useful on the Swords Dance set -- moreso than Pursuit.
Bronzong, in my opinion, could be replaced by Jirachi. Jirachi can Wish to keep itself topped up, while still setting up Reflect. With the EV spread of 240 HP / 112 Atk / 120 SpD / 36 Spe with Careful...let's compare this to Bronzong.
Jirachi's stats become 401 HP / 264 Atk / 236 Def / x SpA / 292 SpD / 245 Spe
Bronzong's stats are 338 HP / 252 Atk / 268 Def / x SpA / 323 SpD / 63 Spe (with 0 Spe IV).
As we start comparing these, we actually see Jirachi's defensive ability is 4%~ better than Bronzong's, and its specially defensive ability is 7%~ better than Bronzong's. Jirachi obviously has slightly higher Attack and better Speed, allowing it to even outspeed Jolly Tyranitar. Jirachi's Iron Head will still 2HKO Gengar, and 4 HP / 0 Def Tyranitar (and will always 2HKO if Stealth Rock is up, unless Tyranitar has Leftovers in which it is still a 75% chance). Iron Head also has that lovely 60% flinch chance, courtesy of Serene Grace. However; Jirachi does lose the Ground immunity that Bronzong carries, but many of the bulky Ground-types (Hippowdon, Donphan, Swampert) are handled by Vaporeon (who also takes on Heatran / Infernape).
Finally, I would consider Fake Out / Close Combat / Fire Blast / Stealth Rock @ Focus Sash Infernape over Jolteon. Stealth Rock would aid this team a lot, allowing Scizor / Zapdos to rack up damage as they cause the opponent switches. You can then run Hidden Power Electric over Protect on Vaporeon to deal with the common Gyarados, so you can keep Surf. If Infernape is also alive, it should be ever so slightly easier to fight off Blissey / Snorlax, if Infernape is alive at the time (although as a lead it may well be killed off early game), but it seems that Snorlax especially annoys the fuck out of your team.
Good luck dude.