Animations
It’s currently a sad state of affairs where the shadowlands / bfa spells look like garbage and the old spell animations used in classic and old versions of the game both look better and are still in the game being used by various old mobs.
Reinstate / fix / glyph the following unfinished looking animations.
Shadowbolt
Incinerate
Chaos Bolt
Demon Bolt is also poor, replace with old soulfire.
General
The no mobility caster isn’t an archetype that has aged well with the game, return MoP style mobility with allowing filler spells to be cast while moving.
Burning Rush - should not share a node with defensives, could have a cooldown and duration and not cost health.
Destruction
Soulshards - Soulshards generate too slow without having bonuses like the current tier 4 set.
Incinerate – Cast while moving.
Infernal - reduce cooldown and duration to 1.5 or 2 mins, remove soulshard generation tie in and bake it into the class.
Backlash - Why was this ever removed, return abilities that gave defenses against constant tunneling in pvp and generic good open world triggers.
Shadowfury - Remove cast time.
Fire and Brimstone – Bring back the toggle version of the ability.
Embertap – Possibly bring back embertap instead of drain life for destruction.
Dimensional Rift – Felt good to use, could remove the rng component of which portal is next though.
Rain of fire – Change back to a mana costing shard generator vs 3+ targets, the shard cost and small aoe is obnoxious in m+ and similar content, fire and brimstone was better AoE gameplay, if a aoe spammable shard spender needs to exist and fire and brimstone isn’t brought back it should be cataclysm.
Chaos Spell School – This shouldn’t lock you out of fire and shadow when interupted, mages etc don’t just stand there unable to do anything when interupted.
Affliction
Soulshards – Change to shard ticks like destruction from agony, can add diminishing returns to aoe shard generation.
Dot application – Longer durations and a way to spread Agony would be good.
Darkglare – Remove it, doesn’t add anything to the theme or gameplay of affliction, feels bad to summon a demon to have decent dot duration.
Demonology
Cast times and Ramping– The spec has too many hard casts with Hand of Guldan, Summon Dogs etc some should be baseline instant, takes too long to do meaningful anything.
Demonic Tyrant – Feels terrible summoning this idiot to command the imps, scrap it and have the warlock empower the minions if that type of cooldown is wanted.
Implosion – feels pretty bad to kill all the minions for this meme ability and have to re ramp through all the slow ramping spells to get back to being able to use aoe again.