Not necessarily gonna happen but if it happens then these are the things that need change in my opinion
Duelists:
ISO: make his abilities a little wider
Reyna: no need to kill to dismiss but it's duration is slower and it's used once and refreshed every 2 kills as jett dash
Neon: wall duration is longer and damage enemies
Phoenix: his wall lasts longer and make the molly like other mollies and not drop midway
Jett: ( she is fine i think no need to change)
Raze: satchels affect her only and they don't do damage
Initiators:
Sova: dart scans once
Fade: (her eye is unreliable and needs change but i don't know what)
Breech: shorter animation time
Kayo: (he is fine)
Skye: remove the "blinded" voice line when she flashes she already has a dog for recon and the best healing in the game
Gekko: he is good after last changes
Controllers:
Harbor: his cove remain as a smoke
Viper: her poison cloud can only be used once and her wall is the only ability to use fuel
Brimstone: his stim remains active till he dies
Omen: (he is fine)
Astra: fix her suck
Sentinels:
Cypher: you can't recall his cam
KJ: no change
Chamber: cheaper bullets
Sage: wall lasts longer
Deadlock: 2 grenades