So, how to we fix Metagross?
- Stone Edge (Drillbur line too)
- Dual Chop
- Overheat (Porygon, Voltorb, Magnemite lines too)
- Night Slash
- Heavy Slam
- Drain Punch
- Comet Punch (because)
- Arm Thrust
- Assurance
- Payback
- Superpower
- Cross Chop
- Crush Claw
- Curse
- Disable
- Skill Swap
- Gear Grind
- Knock Off
- Mirror Coat (Mr.Mime, Steelix, Bronzor lines too)
- Counter
- Punishment
- Recover (Voltorb, Magnemite, Bronzor, Meloetta, Victini, Klefki, Zygarde, Furfrou, Espurr, Vanillite, Trubbish, Munna, Regigigas, Wormadam, Regice, Registeel, Regirock, Spoink, Spinda, Lunatone, Solrock, Nosepass lines too)
- Reflect Type
- Stored Power
- Revenge
- Volt Switch
- X-Scissor
- Wild Charge
Not all of those can find a competitive use but between tutors, level up and relearned moves I think most of these would be legit on it.