Rate my wifi battle team :D

Question

Carracosta (M) @ White Herb
Ability: Sturdy
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Shell Smash
- Aqua Jet
- Stone Edge
- Earthquake

Heatran (M) @ Air Balloon
Ability: Flash Fire
Shiny: Yes
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
- Stealth Rock
- Fire Blast
- Earth Power
- Will-O-Wisp

Diggersby (M) @ Choice Band
Ability: Huge Power
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Earthquake
- U-turn
- Quick Attack
- Return

Espeon (M) @ Leftovers
Ability: Magic Bounce
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
- Calm Mind
- Baton Pass
- Shadow Ball
- Reflect

Charizard (M) @ Charizardite Y
Ability: Blaze
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Air Slash
- Flamethrower
- Dragon Pulse
- Solar Beam

Heracross (M) @ Choice Scarf
Ability: Moxie
EVs: 4 HP / 252 Atk / 252 Spe
Careful Nature
- Close Combat
- Megahorn
- Stone Edge
- Earthquake

Answer 1

I advise you to do the following.

• I personally think a liechi berry will be far more useful
  than white herb for Carracosta, as it is designed to be a fast sweeper in
  this team, and sturdy guarantees you live a hit.
• Perfect set for Heatran.
• I find a scarfed Diggersby harder to deal with than a
  banded one. I think a band's fine as you have Heracross taking up
  your scarf though. Quick attack is not what you want to be locked
  into, I would use rock slide instead.
• I would use morning sun over reflec on Espeon t to increase the CMs you
  can get off and for recovery purposes. Stored power is a nice offensive option you could
  replace shadow ball with.
• Charizard is fine.
• Guts on Heracross is far better than moxie for a non mega, especially as
  you don't have heal bell or aromatherapy. Other than that I would
  replace stone edge if you decide to run rock slide on Diggersby.