Rate my Team PLZ

[Kamekazeman]

This is what my team is ATM

Gyarados @ Life Orb
Adamant Nature

252 ATK
252 Speed
6 HP

Dragon Dance
Taunt
EQ
Waterfall
-------
Blissey @ Leftovers
Calm Nature

252 Sp. Atk
200 Sp. Def
58 Def

Flamethrower
Ice Beam
Thunderbolt
Softboiled
--------
Weezing @ Leftovers
Relaxed Nature

252 Def
252 HP
6 Atk

Pain Split
Explosion
Will-o-wisp/Toxic
Flamethrower
--------
Yanmega @ Focus Sash
Timid Nature

252 Speed
252 Sp. Atk
6 HP

Bug Buzz
Air Slash
Protect/Roost
Hypnosis
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Magnezone @ NEEDS ITEM
Modest Nature

252 Sp. Atk
200 HP
56 Sp. Def

Thunderbolt/Discharge
HM Ice/ Flash Cannon
Magnet Rise
Mirror Coat (taking suggestions)
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Weavile @ Life Orb
Jolly Nature

252 Speed
252 Atk
6 HP

Ice Punch
Night Slash
Brick Break
Swords Dance
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Also considering one of these.

Probopass @ Leftovers
Calm Nature

252 Hp
128 Def
128 Sp Def

Stealth Rock
Protect
Earth Power
Flash Cannon/Thunderbolt
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Alakazam @ Life Orb
Timid Nature

252 Sp. Atk
252 Speed
6 HP

Focus Blast
Psychic
Energy Ball
Shadow Ball

Rate the team, give suggestions on moves, items, pokemon replacements, etc.

[Chris!]

Blissey needs 252 Defense EVs, always. "But Blissey is a Special wall, not a physical one!" That's true, but no battle is perfect and with only 56 Def, stuff like Metagross / Tyranitar Pursuit will OHKO, Skarmory Drill Peck will always 2HKO, and a bunch of other scary numbers. Putting 252 Def more than doubles Blissey's physical hit taking ability; with just 252 Def and no nature, Blissey takes hits about as well as 252 / 0 Def Spiritomb.

Putting Leftovers on Gyarados will make him extremely sturdy; he can switch into a lot of offensive threats thanks to great stats and Intimidate so it's better to heal damage than to do more at the expense of HP. 212 HP / 16 Atk / 172 Def / 104 Spd Adamant is ideal for this bulky role and he'll still be a huge threat with Dragon Dance.

Weezing is fine, though you'll probably want Fire Blast over Flamethrower and possibly Thunderbolt over WoW or Explosion. Thunderbolt lets him counter Gyarados very effectively; Weezing also isn't weak to any of Electivire's moves so there's little to fear with using it.

Yanmega's main problem is a 4x weakness to Stealth Rock. You should probably lead him to minimize that damage and Hypnosis something right off the bat. Or better yet, get rid of him entirely in favor of something that Rapid Spins away Stealth Rock, as your team is horribly weak to it. I'd use Starmie.

The best reason to use Magnezone is to trap Skarmory; with Stealth Rock being more common most people use Rapid Spin to nullify residual damage rather than banking on a Skarmory being the supporter that sets up. For your team, I would recommend Heatran; he has great stats everywhere and a bigger movepool, plus with the Levitators/Fliers on your team you can predict Earthquakes and set up with stuff like Gyarados. I'd use either a Choice Specs or a Rest/Talk Heatran.

Weavile is fine.

I woludn't use Probopass. He's just not that good. Alakazam can be deadly, but you're probably better off with what you have + my suggestions.

As for team weaknesses, you're actually pretty well off. If you add Starmie like I recommend, you'll be fine against Garchomp. Heracross and physical Lucario are beaten by Weezing, Special Lucario by Calm Blissey. Tyranitar's a bit scary, but Weavile works on the revenge kill.

[SuperSimon]

Weavile: I would give Iceshard to make revenge kills easyer.