Renomninating my Lairon set as listed above, seeing as we still have no Hazards or Phazing on the team.
I would like to nominate Bulky Lead Lairon.
Lairon @ Eviolite
Trait: Rock Head
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature
-Stealth Rock
-Head Smash
-Earthquake
-Roar
We need Hazards. Lairon brings them, and so much more. Rock Head 252+ Head Smash means a 150bp STAB move with 0 recoil. Follow it up with EQ for Coverage and Roar to force out sweepers, and you have a very interesting lead mon who can double as a defensive Pivot in a tight spot, due to Eviolite and Lairon's massive bulk.
Also, Lairon is seriously a threat once it gets going. It could even run a set with Automatize to quickly increase its speed to dangerous levels, but this set is a bit more geared toward what we need on the team.