Rate my Sandstorm team (changes made, please take a second look)
It looks solid to me, I just want to know if I'm forgetting anything. Here's the team:
Hippowdon @ Leftovers
Impish nature
252 HP, 6 attack, 252 defense
Earthquake
Stealth Rock
Roar
Slack Off
My lead, provides rocks and sand for the rest of my team. It is forced to switch out on Gengar leads, but can stay in on anything physical, including Gyarados if it doesn't use Taunt.
Garchomp @ Leftovers
Jolly nature
6 HP, 252 attack, 252 speed
Swords Dance
Earthquake
Dragon Claw
Substitute
Now that I've used Garchomp in a sandstorm, I can see why its so terrifying. I Sub until Sand Veil takes effect, then Swords Dance as much as possible, then proceed to kill everything that moves. Of course, without Fire Fang, it doesn't take on Bronzong as well as it could, but it can at least 2HKO with enough Swords Dances built up. By the way, I maxed speed in order to outrun Chainchomps and other Garchomps with 240 speed EVs.
Jirachi @ Leftovers
Modest nature
252 HP, 80 special attack, 176 speed
Psychic
Thunderbolt
Calm Mind
Substitute
My Blissey killer, people tend to switch it in when Jirachi makes its first Sub, then have to ST twice to break it, and after a few turns I have enough special attack to 2HKO the pink flab monster (and sweep the rest of their team, of course).
Skarmory @ Leftovers
Impish nature
252 HP, 96 attack, 156 defense, 4 speed
Brave Bird
Whirlwind
Spikes
Roost
Previously, I had been using a Forretress. All it did was set up Toxic Spikes and die. Now, I changed it to a Skarmory, so it can shuffle Spikes when Hippowdon fainted. However, I've found that it can't stay in all that long, because everyone nowadays seems to carry a move that scares it.
Blissey @ Leftovers
Bold nature
252 HP, 252 defense, 6 special defense
Seismic Toss
Counter
Aromatherapy
Softboiled
What can I say, I just can't make a team without this girl. Even though she's vulnerable to sandstorm, Blissey is still more than bulky enough to take hits, and she can get over not having Leftovers recovery thanks to Softboiled.
Gengar @ Choice Scarf
Modest nature
6 HP, 252 special attack, 252 speed
Shadow Ball
Thunderbolt
Hidden Power Ice
Focus Blast
Replacing my Choice Band Aerodactyl, Gengar provides t things for my team: a revenge killer of fast foes, most notably Infernape, which can destroy my entire team if it has HP Ice; and an anti-spinner of sorts, scoring OHKOs on Starmie and Donphan, and 2HKOs on Forretress and Tentacruel.
So that's that, is there anything I left out?
It looks solid to me, I just want to know if I'm forgetting anything. Here's the team:

Hippowdon @ Leftovers
Impish nature
252 HP, 6 attack, 252 defense
Earthquake
Stealth Rock
Roar
Slack Off
My lead, provides rocks and sand for the rest of my team. It is forced to switch out on Gengar leads, but can stay in on anything physical, including Gyarados if it doesn't use Taunt.

Garchomp @ Leftovers
Jolly nature
6 HP, 252 attack, 252 speed
Swords Dance
Earthquake
Dragon Claw
Substitute
Now that I've used Garchomp in a sandstorm, I can see why its so terrifying. I Sub until Sand Veil takes effect, then Swords Dance as much as possible, then proceed to kill everything that moves. Of course, without Fire Fang, it doesn't take on Bronzong as well as it could, but it can at least 2HKO with enough Swords Dances built up. By the way, I maxed speed in order to outrun Chainchomps and other Garchomps with 240 speed EVs.

Jirachi @ Leftovers
Modest nature
252 HP, 80 special attack, 176 speed
Psychic
Thunderbolt
Calm Mind
Substitute
My Blissey killer, people tend to switch it in when Jirachi makes its first Sub, then have to ST twice to break it, and after a few turns I have enough special attack to 2HKO the pink flab monster (and sweep the rest of their team, of course).

Skarmory @ Leftovers
Impish nature
252 HP, 96 attack, 156 defense, 4 speed
Brave Bird
Whirlwind
Spikes
Roost
Previously, I had been using a Forretress. All it did was set up Toxic Spikes and die. Now, I changed it to a Skarmory, so it can shuffle Spikes when Hippowdon fainted. However, I've found that it can't stay in all that long, because everyone nowadays seems to carry a move that scares it.

Blissey @ Leftovers
Bold nature
252 HP, 252 defense, 6 special defense
Seismic Toss
Counter
Aromatherapy
Softboiled
What can I say, I just can't make a team without this girl. Even though she's vulnerable to sandstorm, Blissey is still more than bulky enough to take hits, and she can get over not having Leftovers recovery thanks to Softboiled.

Gengar @ Choice Scarf
Modest nature
6 HP, 252 special attack, 252 speed
Shadow Ball
Thunderbolt
Hidden Power Ice
Focus Blast
Replacing my Choice Band Aerodactyl, Gengar provides t things for my team: a revenge killer of fast foes, most notably Infernape, which can destroy my entire team if it has HP Ice; and an anti-spinner of sorts, scoring OHKOs on Starmie and Donphan, and 2HKOs on Forretress and Tentacruel.
So that's that, is there anything I left out?