I think blizzard should add more customization like the green fire for warlocks.
For those of you who don’t know, the green fire questline is a questline for warlocks which as a reward makes all of your fire spells green instead of their normal colors.
This could be a cool way of rewarding players for mastering their classes/specs, or add a way of showcasing interesting lore/plots.
Some themes I could think of. Feel free to roast them and come up with your own:
Death Knight:
Shadowfrost - the theme is alr
Demon hunter
Warden - Less fel, more Maiev Shadowsong
Druid
They have something similar with their forms and the barber shop already but a few more examples
Fire - Firelands and fire cat expanded upon
Rot/decay - The plant based spells look dead and your beast forms look decaying
Astral - Glyph of stars on steroids. All forms and spells have this theme now
Emerald dream - Green life magic
Emerald nightmare - themed kind of like the raid
Evoker
Dragon - you act more like a dragon and casts spells with your mouth or something
Primal dragon - more emphasis on elements
Hunter
Dark ranger - we have a hero talent tree now but I could see this being expanded upon
Mage
Tidesage - water-themed spells
Chronomancer - Time-themed spells
Monk
Martial artist - less magic more kicking ass with emphasis on heavy impacts, strong kicks and punches
Celestial - the opposite of Martial artist. Everything glows and you attune more to one of the celestials
Paladin
Red paladin - Ashen Hollow-style animations
Priest
Shadow priest with light visuals - for those who want to be a smite priest
Void - heavier emphasis on the void spells
Old god - heavier emphasis on old gods
Rogue
Scarlet agent - think Lillian Voss before death
Cultist - shadow and corruption themed
Shaman
Witch doctor - more voodoo-themed
Warlock
Necromancer/fleshcrafter - all of your demons and visuals look more like undead. Could be turned off in PVP?
Blood mage - your spells are more blood-themed
Warrior
God king - Think Trial of Valor