Need advice on altering my Black2 WiFi team for X/Y

[Nah]

When the PokeBank and Transporter become available late December, I'm gonna bring up the team that I was using for Black2/White2 Wifi battles to my Y. It's obviously gonna need to be tweaked, since X/Y has significantly altered the metagame. The team is:

1) Mega Blaziken (this one is already on my Y, since event Torchic) w/Blazikenite:
Nature: Lonely
EVs: 252 Attack, 252 Speed
Moves: Flare Blitz, High Jump Kick, Protect, Shadow Claw
Ability: Speed Boost

2) Vaporeon w/Lum Berry
Nature: Bold
EVs: 252 HP, 252 Defense, 4 Sp.Def
Moves: Wish, Toxic, Scald, Protect
Ability: Water Absorb

3) Ferrothorn w/Leftovers
Nature: Brave (don't remember exactly)
EVs: 252 HP, 48 Def, 204 Sp.Def
Moves: Gyro Ball, Power Whip, Substitute, Leech Seed
Ability: Iron Barbs

4) Gengar w/Ghost Gem
Nature: Timid
EVs: 252 Sp.Attack, 252 Speed
Moves: Shadow Ball, Focus Blast, Psychic, Thunderbolt
Ability: Levitate

5) Mamoswine w/Nevermeltice
Nature: Lonely
EVs: 252 Attack, 252 Speed
Moves: Ice Shard, Ice Fang, Stone Edge, Earthquake
Ability: Snow Cloak

6) Haxorus w/Choice Band
Nature: Naughty
EVs: 252 Attack, 36 HP, 216 Speed
Moves: Outrage, Brick Break, Dragon Claw, Earthquake
Ability: Mold Breaker

I'm aware that this isn't 100% perfect by Gen 5 standards. I'm also aware that Gengar will need a moveset change and item change when it arrives. I would also like to replace Haxorus. While its powerful, all I have it do is spam Outrage, which is no longer a good idea with all the Fairies running about. And I will not budge on Vaporeon and Blaziken. They stay, along with their sets.
So if you can help me, please do. I'd appreciate it.

 

[PlatinumDude]

Consider Swords Dance or Stone Edge over Blaziken's Shadow Claw.

Ferrothorn is too slow for SubSeed and it's well-known for the hazard support it provides:
-Stealth Rock/Spikes
-Leech Seed
-Power Whip/Protect
-Gyro Ball/Thunder Wave
Nature: Relaxed
EVs: 252 HP/208 Def/48 SDef
Item: Leftovers
Ability: Iron Barbs

Ghost Gem doesn't exist in X/Y. Gengar already hits Fighting and Poison Pokemon hard with Shadow Ball anyways:
-Shadow Ball
-Sludge Bomb
-Focus Blast/Hidden Power (Fire)
-Substitute/Protect
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb/Black Sludge

or
-Shadow Ball
-Sludge Bomb
-Focus Blast
-Hidden Power (Ice)/Thunderbolt/Trick
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Choice Scarf

Icicle Crash is the superior Ice STAB on Mamoswine:
-Icicle Crash
-Earthquake
-Ice Shard
-Stone Edge/Stealth Rock
Nature: Adamant/Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Life Orb/Choice Band
Ability: Thick Fat

or
-Stealth Rock
-Earthquake
-Ice Shard
-Icicle Crash/Stone Edge
Nature: Adamant/Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Focus Sash
Ability: Oblivious (now prevents Taunt from affecting Mamoswine)

Choice Haxorus is now risky in Gen VI due to the Fairies running around:
-Dragon Dance/Swords Dance
-Outrage
-Earthquake/Taunt
-Poison Jab
Nature: Adamant
EVs: 120 HP/252 Atk/136 Spe
Item: Lum Berry
Ability: Mold Breaker