I have just been looking into the march usagestats, and here's hope that this will give an idea what we'll probably be looking at when it comes to a potential hackmons uu.
These pokemon will be banned:
These abilities will be banned for pokemon that don't already possess them:
These moves (maybe missing a few) will be banned for pokemon that don't already possess them:
One thing that immediately comes to mind is that certain moves are almost exclusively paired with a certain (would have been banned) ability. One of the most obvious is of course Superpower which is nothing remarkable without Contrary.
These pokemon will be banned:
Gengar-Mega
Gyarados-Mega
Slowbro-Mega
Chansey
Mewtwo-Mega-X
Mewtwo-Mega-Y
Tyranitar-Mega
Lugia
Shedinja
Slaking
Registeel
Groudon-Primal
Kyogre-Primal
Rayquaza-Mega
Deoxys-S
Deoxys-A
Dialga
Giratina
Regigigas
Arceus
Audino-Mega
Kyurem-B
Kyurem-W
Greninja-Ash
Aegislash
Xerneas
Yveltal
Zygarde-Complete
Diancie-Mega
Solgaleo
Pheromosa
Kartana
Celesteela
Gyarados-Mega
Slowbro-Mega
Chansey
Mewtwo-Mega-X
Mewtwo-Mega-Y
Tyranitar-Mega
Lugia
Shedinja
Slaking
Registeel
Groudon-Primal
Kyogre-Primal
Rayquaza-Mega
Deoxys-S
Deoxys-A
Dialga
Giratina
Regigigas
Arceus
Audino-Mega
Kyurem-B
Kyurem-W
Greninja-Ash
Aegislash
Xerneas
Yveltal
Zygarde-Complete
Diancie-Mega
Solgaleo
Pheromosa
Kartana
Celesteela
These abilities will be banned for pokemon that don't already possess them:
Aerilate
Contrary
Dazzling/Queenly Majesty
Desolate Land
Fur Coat
Flash Fire
Imposter
Magic Bounce
Magic Guard
Mold Breaker/Teravolt/Turboblaze
No Guard
Normalize
Pixilate
Psychic Surge
Poison Heal
Prankster
Regenerator
Refrigerate
Simple
Triage
Unaware
Unburden
(Sturdy)
Contrary
Dazzling/Queenly Majesty
Desolate Land
Fur Coat
Flash Fire
Imposter
Magic Bounce
Magic Guard
Mold Breaker/Teravolt/Turboblaze
No Guard
Normalize
Pixilate
Psychic Surge
Poison Heal
Prankster
Regenerator
Refrigerate
Simple
Triage
Unaware
Unburden
(Sturdy)
These moves (maybe missing a few) will be banned for pokemon that don't already possess them:
Anchor Shot
Aromatherapy
Belly Drum
Bonemerang
Boomburst
Close Combat
Core Enforcer
Destiny Bond
Defog
Draco Meteor
Dragon Ascent
Dragon Tail
Earth Power
Extremespeed
Facade
Fake Out
Final Gambit
Fleur Cannon
Haze
Head Smash
Ice Beam
Ice Hammer
Icicle Crash
Judgment
King's Shield
Knock Off
Light of Ruin
Magma Storm
Metal Burst
Moonblast
Moongeist Beam
Oblivion Wing
Overheat
Parting Shot
Power Trip
Precipice Blades
Psycho Boost
Psystrike
Quiver Dance
Rapid Spin
Recover/variants
Sacred Fire
Secret Sword
Shell Smash
Shift Gear
Shore Up
Spectral Thief
Spikes
Spore
Stealth Rock
Steam Eruption
Sticky Web
Stored Power
Substitute
Sunsteel Strike
Superpower
Tail Glow
Thousand Arrows
Thousand Waves
Toxic
Toxic Spikes
Trick/Switcheroo
U-turn
V-Create
Volt Switch
Whirlwind
Will-O-Wisp
Wish
Aromatherapy
Belly Drum
Bonemerang
Boomburst
Close Combat
Core Enforcer
Destiny Bond
Defog
Draco Meteor
Dragon Ascent
Dragon Tail
Earth Power
Extremespeed
Facade
Fake Out
Final Gambit
Fleur Cannon
Haze
Head Smash
Ice Beam
Ice Hammer
Icicle Crash
Judgment
King's Shield
Knock Off
Light of Ruin
Magma Storm
Metal Burst
Moonblast
Moongeist Beam
Oblivion Wing
Overheat
Parting Shot
Power Trip
Precipice Blades
Psycho Boost
Psystrike
Quiver Dance
Rapid Spin
Recover/variants
Sacred Fire
Secret Sword
Shell Smash
Shift Gear
Shore Up
Spectral Thief
Spikes
Spore
Stealth Rock
Steam Eruption
Sticky Web
Stored Power
Substitute
Sunsteel Strike
Superpower
Tail Glow
Thousand Arrows
Thousand Waves
Toxic
Toxic Spikes
Trick/Switcheroo
U-turn
V-Create
Volt Switch
Whirlwind
Will-O-Wisp
Wish
One thing that immediately comes to mind is that certain moves are almost exclusively paired with a certain (would have been banned) ability. One of the most obvious is of course Superpower which is nothing remarkable without Contrary.