Your team has a weakness to Scarfers and to Absol (and any other Dark type Sucker Punch set up Pokemon).
We'll start with the Absol. Absol (as well as Skuntank with Hone Claws and Swords Dance Cacturne) just use Duosion as set up bait. From there they can sweep your entire team with Sucker Punch (a +3 or +4 Sucker Punch OHKOs Sawk). HP FIghting won't help much either, as that will leave you vulnerable to foes like Mr. Mime and especially Gardevoir (possibly Swoobat if Simple is released.) We'll add Alomomola to your team, as it is an excellent physical wall. This also helps the trouble you'll probably have with Emboars. I also think Grass types such as Victreebel and Tangela will cause problems for your team. And you need a strong Special sweeper, as otherwise you'll be walled by the many physical walls in NU. I'm going to suggest replacing Meganium for a Vileplume, who can also use Aromatherapy but hits harder with its attacks and isn't completely walled by Grass types thanks to Sludge Bomb. We can make it an offensive support on your team.
I then think we should replace Regirock. While the Stealth Rocks it provides are nice, it is otherwise dead weight for your team. Whike my Throh was a Circle Throw, Restalk, Bulk Up one I foolishly wanted to try out on this team, most Throh (and also Gurdurr) will be using Payback. So they can use Regirock to set up their Bulk Ups and then launch powerful STAB on it, Drain Punch in Gurdurr's case, Revenge or Circle Throw in Throh's case. If you try to send out Golurk, they'll be able to tank yourr attacks and launch a powerful Payback at you. So we'll be replacing Regirock with a strong Special Sweeper. My eyes are on Gardevoir, who is a beast when Scarfed.
We'll also replace Steel Wing for U-Turn on Swellow. Swellow should not be staying in on Rock types. Steel Wing will not do nearly enough and Swellow will just be KOd. U-Turn allows you to switch safely to an appropriate counter.
I'll also be changing the EVs and Natures on the importable copy.
Gardevoir (M) @ Choice Scarf
Trait: Trace
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature (+SAtk, -Atk)
- Psychic
- Hidden Power [Ice]
- Thunderbolt
- Focus Blast
Swellow (M) @ Toxic Orb
Trait: Guts
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Brave Bird
- Facade
- U-turn
- Protect
Sawk (M) @ Choice Band
Trait: Mold Breaker
EVs: 252 Atk / 4 Def / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Ice Punch
- Earthquake
- Close Combat
- Stone Edge
Alomomola (F) @ Leftovers
Trait: Regenerator
EVs: 252 HP / 124 Def / 132 Spd
Impish Nature (+Def, -SAtk)
- Waterfall
- Wish
- Protect
- Toxic
Golurk @ Life Orb
Trait: Iron Fist
EVs: 252 Atk / 4 Def / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Ice Punch
- Rock Polish
- Shadow Punch
- Earthquake
Vileplume (M) @ Black Sludge
Trait: Effect Spore
EVs: 252 HP / 208 Def / 44 SAtk / 4 Spd
Bold Nature (+Def, -Atk)
- Sludge Bomb
- Moonlight
- Giga Drain
- Aromatherapy
