Here's my opinion.
My changes will be indicated in bold.
Camerupt @ Cameruptite
Evs: 252 Sp. Atk, 252 HP, 4 Sp. Def
Nature: Quiet
Ability: Solid Rock --> Sheer Force
- Flamethrower/ Fire Blast
- Earth Power
- Flash Cannon
- Stealth Rocks
Okay, I liked your Camerupt's set, but I think Flamethrower or Fire Blast will do its justice with the help of Sheer Force. Flamethrower is more viable as it is certain to hit under normal conditions.
Breloom @ Muscle Band
Evs: 252 Atk, 252 Speed, 4 Hp
Nature: Adamant
Ability: Technician
- Mach Punch
- Seed Bomb
- Rock Thomb
- Spore
Okay, I gave you the set to my Breloom which I'm pretty sure is common enough. Technician boosts the power of moves with the base power of 60 or lower; this is great for Mach Punch and Rock Tomb. Spore is a little help for when Trick Room is set up. I didn't put a Choice Band on it because you may be in a situation where you may need to use Rock Tomb instead of Mach Punch, or vice versa!
Florges @ Leftovers
Evs: 252 HP, 252 Sp. Def, 4 Sp. Atk
Nature: Calm
Ability: Flower Veil
- Moonblast
- Wish
- Light Screen
- Protect
Let's try to use the regular duration of Light Screen and take in the benefits of Leftovers. While I strongly suggest using Reflect instead of Light Screen it's your choice either is great. This is Reflect's potential:
252+ Atk Mega Aggron Iron Head vs. 252 HP / 0 Def Florges through Reflect: 144-170 (77.8 - 91.8%) -- guaranteed 2HKO after Leftovers recovery
Scizor's set is great. I'd go with Defog since Stealth Rocks can mess up Multiscale on Dragonite. I have a personal issue with Stealth Rocks as well. >.>
I can see the strategy with Dragonite being "survive an attack while Dragon Dancing, Weakness Policy kicks in, then a possible sweep!" All in all, great set!
Finally we have your awesome Rotom-W! I can really see him having potential although his EV Spread, could go a little like so:
Rotom-W @ Sitrus Berry
EVs: HP 252, Def 44, Sp Atk 60, Sp. Def 148, 4 Speed
Nature: Calm
Ability: Levitate
- Hydro Pump
- Pain Split
- Will O Wisp
- Volt Switch
Additional Edit
Alright, sorry for the mistakes but I tried to find the best candidate for this team to have a Trick Room user. After a few thoughts, I concluded that despite the Fighting Weakness Porygon2 would be best. So lets replace Florges with Porygon 2, since Dragon is covered by Dragonite and Dark is covered by Breloom.
Porygon2 @ Eviolite
Evs: 252 HP, 160 Def, 80 Sp. Def, 16 Sp. Atk
Nature: Sassy
Ability: Download
- Trick Room
- Recover
- Thunderbolt // Tri- Attack
- Ice Beam
Since Florges's role wasn't as important as a Trick Room setup I decided to remove her. Porygon2 will help out Breloom, Camerupt, and Rotom-W in this setting!
Rating: 4/5
Review:
Your team is seemingly pretty balanced in both coverage and hitters!
Hopefully you take my suggestions into consideration! Glad to have Helped!