Class:
Spec:
Race:
Subrace:
Class: Tinkers (w/ Tank/Healing/DPS)(Customizable Battlemechs)
Spec: Shaman Tank spec
Race: Orges/Murlocks
Allied Race: Half Elf(Thiccer Elf; half Human(in other words Alexstraza Model playable)) or Skeleton(Undead Variant)
Poll
Class: Tinker, but cooler name and no mechs. Like Engineer from GW2. 3 roles.
Spec: Gladiator Warrior, or any new support style specs
Race: Forsaken Kul Tiran; Forsaken but standing upright and scaled way up in size.
Subrace: Eh 
…can you say more here?
Like about what? Tech classes don’t have to involve a mech suit. Guns, bombs, turrets, rockets, flamethrowers, energy shields, lightning/lasers… The game is already full of these things. Could have energy/ammo system or like building and dissipating heat, etc.
Gnome
Paladin
that is all.
Ogre
that is all
Class: Druid
Spec: Balance
Race: Night Elf
Subrace: Blood Elf
Gnome
Druid
Restoration
Cute
Class: Tinker could be cool. I also kind of want something that is an Alchemist. That could maybe be a healing spec of the tinker? Throw potions at things.
Spec: I second Shaman tank. I also think a lot of classes should just get tank specs. Might help with tank shortage if more classes had tank specs for people to try. Aside from maybe Priest I can’t think of any class that couldn’t manage a tank spec thematically.
Race: Centaur. I know it will never happen because people would hate having a race that can’t use all their mounts. The armor isn’t an issue because they could just have custom stuff like Dracthyr but equip regular stuff from belt up. I personally don’t mind having a character that can’t use any mounts. Give them racial that let them run at the speed of a ground mount. And then maybe the ability from Ohuna to shift into a bird.
Allied Race: I can’t think of any. I personally have always felt that Allied Races should have just been customizations of existing races, and unique races like Vulpera should have just been that. Give Horde the Vulpera and Alliance the Sethrak, and all other “allied” races are just customizations of existing ones. So I can’t think of any race that couldn’t just be further customization for existing ones.
But also, my two cents, is eventually we’ll run out of new races or it’ll just be too much bloat. I’d prefer they start slowing down on the races and just start adding a lot more customization to the ones they already have.
Class: any class
Spec: Any spec besides heals
Race: NAGA!!
Subrace: Ogre
Not too many class archetypes from Warcraft history left. Perhaps Necromancer (in before “nEcRoMaNcErS ArE JuSt uNhOlY DeAtH KnIgHtS AnD WaRlOcKs!1!”) or Tinker.
A proper melee or tank specialization for Evoker (what Augmentation should have been). Make a Black Dragonflight / Void one focusing on Shadowflame and a little bit of risk for reward (higher damage dealt but more damage taken). Could use a resource that is a mix-mash of Insanity from Shadow Priests and Stagger from Brewmaster Monks.
Still waiting for Ogres.
Half Elves seem to be covered with the new pointed ear options for Humans and Kul Tirans and rounded ear options for the different Elf races, so I’d like to see Mok’nathal (Hal Orcs, Half Ogres) make an appearance; larger than Orcs but smaller than Ogres.
Class: Commander. Pet based class. Dps / Support specs.
Spec: The above but as a support warrior spec if it can’t be a whole class.
Race: Mok’natal
Subrace: Ice trolls, just so they can join the Horde and stop being done so dirty
Class: Spellbreaker. An arcane-magic powered, melee plate class. A spellsword.
Race: Ogre. Ogres should have been in this game from TBC onward.
Subrace: Krokul.
Spec: Balance out the universe and give Demon Hunters a third spec like a real class. Call it Chaos and make it a ranged DPS spec that focuses on throwing its glaives around.
Class: Tinker
Spec: Tinker Tank spec (Where I am in a Mech Suit similar to the one King Mekkatorque is in at times)
Race: Ogre I suppose (Don’t really care for any more races really)
Subrace:
(Sips 
)
Too many races that should be playable already.
For Alliance I’d like:
Broken draenei/krokul
Furbolg
Tuskar
For Horde I’d like:
Gnoll
Ogre
Satyr
I would play the 
out of a furbolg shaman.
Class: Necromancer. And I mean an actual, legit caster Necromancer. Not someone who dropped out of Scholomance and joined the jousting team.
Spec: Spellblade for Mage like how Rhonin fought with arcane swords in WotA
Race: Ogre for Horde and Vrykul for Alliance
Allied Race: N/A
Most already said the things I would find cool to play in WoW (Tinker, Necromancer, Spellblade) maybe a Technomage…
What I would think would be a cool(ish) is sub class/specs for our mains (and of course alts)
Utilize certain weapons, base abilities and passives from the talent tree.
Probably would make balancing even more chaotic, and would be non stop shenanigans of a terrible idea lol.
Class: Riftblade (Void-wielding plate melee class so the demands to bastardize the theme of paladins by letting them turn all of their spells Void-themed finally end)
Spec: None
Race: Vrykul (likely coming in TLT)
Allied Race: Harronir (likely coming in 11.1 or later) or yaungol
Neutral High Elf hunters and warlocks
We have
Class: Tinker
Spec: Tinker Tank
Race: Saberon
Subrace: Night Elf Worgen