The current PVP meta is dominated by 2 strategies, either aoe dot cleave or Sandstorm counter teams. It has created a stale environment where anything else will just lose unless RNG, misplays or skipping turns.
Below are two lists one nerfs and one buffs that would greatly improve the dynamics and enjoyment of PVP.
Overpowered abilities:
Poison Protocol
Reduce base damage from 5 to 4.
Great Sting
Reduce base damage from 6 to 5.
Twilight meteorite
Reduce base damage from 50 to 33 in line with all other abilities with the same CD and effect.
Money Meteor
Reduce base damage from 50 to 33 in line with all other abilities with the same CD and effect.
Dreadful Breath
Reduce damage modifier when Cleansing Rain is up from 25% to 10%.
Sandstorm
Remove 10% hit reduction and base damage reduction from 5 to 4.
Darkness
Remove 10% hit reduction.
Great Cleave
Reduce base damage from 30 to 25.
Void Slap
Reduce base damage from 30 to 25.
Sunlight
Reduce Maximum HP increase from 50% to 25%.
Photosynthesis
Change to be twice as effective on the frontline only.
Immolation
Add 5 round CD and count as direct damage in relation to Thorns type abilities.
Dazzling Dance
Add 5 round CD.
Moon Dance
Add 5 round CD.
Primal Cry
Reduce base damage from 10 to 8.
Weakness
Reduce damage & speed reduction from 50% to 25%
Jar of Smelly Liquid
Reduce damage & speed reduction from 50% to 25%
Flash Freeze
Reduce base damage from 30 to 25, Increase CD from 3 to 4 rounds & reduce debuff duration from 5 to 3 rounds.
Barrier Projector
Increase CD to 5 rounds & decrease base reduction from 15 to 10.
Ironskin
Increase CD from 4 to 5 rounds.
Magma Trap
Reduce duration to 5 rounds & on expiry does not cause damage or stun.
Snap Trap
Reduce duration to 5 rounds & on expiry does not cause damage or stun.
Powerball
Each use provides 5 round 20% speed buff.
Nature’s Ward
Add 4 round CD.
Wish
Use the same healing mechanics as Consume Corpse based on power instead of HP.
Demolish and similar 50% hit abilities
Add debuffs when these type of abilities miss such as increased damage, stunned, reduced damage done etc
Stone From
Reduce base healing from 45 to 30
Blizzard weather
Reduce damage buff from 25% to 15%.
Underpowered abilities:
Slither
Increase CD to 4 rounds & increase speed debuff to 3 rounds.
Counterstrike
Reduce CD by 1 round.
Uncertainty
Change 100% crit to be team wide and remove hit chance reduction.
Unstable Engineering
Change duration to 3 rounds, add 3 rounds CD and remove hit chance reduction.
Omni Pummel
Increase base damage from 6 to 7.
Accuracy
Increase duration from 4 to 7 rounds.
Rake
Increase base damage from 15 to 20.
Consume
Increase base damage from 12 to 14.
Sticky Web
Increase debuff duration from 2 to 3 rounds.
Brittle Webbing
Increase base damage from 10 to 15.
Going Bonkers
Increase CD to 4 rounds and increase buff duration to 3 rounds.
Confusing Sting
Increase proc chance of extra damage from 10% to 30%.
Tentacle Stab
Increase proc chance 30%.
Overcharge
Increase buff duration from 2 to 3 rounds.
Raise Dead/Mass Ressurection
Increase rezzed HP to 15%.
Cute As A Button
Increase buff duration to 4 rounds.
Caw
Increase critical chance buff from 50% to 75%.
Reanimate
Change to same as Hibernate etc.
Void Portal
Reduce base damage taken from 20 to 15.
Bend Time
Allow ability to reset CDs correctly
These changes would not remove OP combinations or better pets from emerging but would certainly balance the playing field and create an environment of experimentation.
Edit: Added Blizzard weather change