ORAS OU M-Altaria, Heatran and Regenerators

[Rhizic]

Hello, this RMT is a Mega Altaria team that I am relatively happy with and have had fun using. I am not the best battler or team builder so I came here in seek of tweaks to the team as I struggle verses certain things and am lost as to where to go and how to improve.

Mega-Altaria
@ Altarianite
Ability: Natural Cure
Happiness: 0
EVs: 248 HP / 156 Atk / 76 Def / 28 Spe
Adamant Nature
- Dragon Dance
- Roost
- Frustration
- Earthquake​

This EV spread is aiming for a bulky set up sweeper. The HP and Def EVs allow M-Altaria to never be 2 hit KO'ed by M-Lopunny. The 28 Speed EVs allow Altaria to reach 406 speed after two dragon dances letting it outspeed base 135 fully invested positive natured Pokemon. The rest was put into attack to maximize damage output. I chose Natural Cure as an ability to absorb status moves on a switch in, so switching out could cure it. Dragon dance is for boosting, allowing Altaria to sweep, Roost for longevity, Frustration as Pixilate boosted stab, and earthquake as coverage to hit Pokemon that resist the Fairy stab.

Heatran
@ Leftovers
Ability: Flash Fire
EVs: 248 HP / 252 SpD / 8 Spe
Calm Nature
IVs: 0 Atk
- Protect
- Lava Plume
- Toxic
- Stealth Rock​

Heatran is a fantasic teammate to Altaria, as it resists all of its weaknesses(Fairy,Poison,Steel,Ice) and is very bulky. The EV spread is standard SpeDef Heatran allowing it to take special hits with its fantastic typing. Heatran is a SR setter for the team, can burn with lava plume, and toxic Pokemon for residual damage. Protect is there for increasing leftovers recovery and increasing toxic damage.

Slowbro (See bottom, Slowbro is dropped and replaced, Leaving it here just to show team history)
@ Leftovers
Ability: Regenerator
EVs: 252 HP / 232 Def / 24 SpD
Bold Nature
- Slack Off
- Psyshock
- Scald
- Thunder Wave​

Slowbro acts as the physical wall of the team. As it resists some of Heatrans weaknesses, has good physical bulk and is gifted with one of the best abilities in regenerator, it is a fantastic addition to the team. Yet another standard set, the small SpD investment allows slowbro to avoid being 2HKO'ed by specs Keldeo while the rest are put into Physical defense to improve its capabilities as a physical wall. Slack off is used for additional recovery to leftovers, scald and psyshock as stab moves to deal damage to opposing Pokemon. Thunder Wave cripples opposing Pokemon trying to set up on Slowbro.

Amoonguss
@ Black Sludge
Ability: Regenerator
EVs: 252 HP / 160 Def / 96 SpD
Bold Nature
- Spore
- Giga Drain
- Sludge Bomb
- Hidden Power [Fire]​

Looking at my team pre-Amoongus, certain Pokemon came to mind the can beat both, such as Rotom-W, M-Venusaur, Ferrothorn and many more. Amoongus can combat these, not minding getting burned too much, and has HP fire to damage Ferrothorns. Spore is able to render Pokemon useless for a few turns allowing other members to switch in. Giga Drain is for extra recovery, and sludge bomb is for STAB coverage. The EV spread standard, as I wanted this to be physically bulky and able to combat Azumarill. Amoonguss also having regenerator makes a duel regenerator team that continuously gains health.

Conkeldurr
@ Assault Vest
Ability: Guts
EVs: 148 HP / 252 Atk / 88 SpD / 20 Spe
Adamant Nature
- Ice Punch
- Drain Punch
- Knock Off
- Mach Punch​

My team was beginning to sway heavily to the special side, and a big fear of mine, Bisharp, after a swords dance is capable of dismantling this team. The given EV spread allows Conkeldurr to not be KO'ed by a Knock off and iron head at plus 2 even after SR damage. The SpD EVs maximize bulk and increase the benefit of assault vest. 20 speed EVs are run because Smogon told me to (Kidding, it outspeeds Hippowdon). Ice punch for coverage, Drain Punch to regain health, Knock off is a poweful move that removes items and hits types that are SE vs Conkeldurr. Mach Punch is used to hit bisharps at +2 so Conkeldurr does not need to receive additional damage from an Iron Head and rather a Sucker Punch.

Scizor (Updated)
@ Occa Berry
Ability: Technician
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Defog
- Roost
- U-turn
- Bullet Punch​

I finally need as hazard remover, I initially had Excadrill here, but that led to problems. I have updated this Scizor's EVs and Item to make it better in my opinion. Occa Berry makes Scizor able to deal large amounts of damage to Latios after living HP fires, the EV spread makes it physically bulky, which my team likes seeing how specially capable it is. With this set, Defogs are alot easier to get off and is significantly more hard to KO.

Final Notes and Problems (Please Read)
As you probably saw, my team has lost of.... Interesting EV spreads, if any of them are simply unviable and/or dumb please let me know. My team is unfortunately destroyed by Belly Drum Azumarill. While I can combat M-Venusaur, it is still a huge issue and if it is offensive beats my "answer" to it. Hoopa-U can OHKO everything (and from what I was told it wont be banned so changes are needed) I am lost as where to go from here, who to swap and what to change, if you can provide any help it would be greatly appreciated. [Edited due to formatting error]
Edit: Self made improvement that I feel helps exponentially. Replace Slowbro with:

Tornadus-Therian
@ Assault Vest
Ability: Regenerator
EVs: 132 HP / 160 SpA / 216 Spe
Timid Nature
- Hurricane
- Focus Blast
- Knock Off
- U-turn​

I feel this edit in picking up Tornadus-T rounds the team so well. Tornadus-T gives me a ground immunity which my team lacked. It maintains the duel regenerator I was going for and enables me to have a solid answer to Mega Venusaur, (can beat Keldeo just like slowbro), U-turn can OHKO Hoopa-U, and allows me to make Amoongus physically bulky so it can combat Azumarill better. <-- Have done and cant wait to use the new team!