The moment you allow Orc Druids is the moment I spend hundreds of dollars on race changes! Been dreaming about this for years now.
It should have been playable with the release of the Mag’har.
It’s a money-making idea Blizzard, we all know how you like money!
But is it more profitable than blood elf druids? 
What do you call an Orc in the Emerald Dream?
John Cena.
Night Elf Paladins first…then we can talk.
So are you going to backup your request with reasons and debate?
Orrrr what?
Doesn’t make lore sense. But ok.
Can we have Worgen Shamans then?
Unless you talk about Legion Paladin order hall campaign…it’s already in the game, just not playable,yet.
While we’re at it: Vulpera Druids please?
So are Orc Druids.
One existed in WoD.
Yes. I do believe there is a Night Elf Paladin in the game. Look at Tauren Paladins. They came out of no where.
The Tauren Paladins were invented during Wrath by one Tauren Warrior who became a Paladin. I didn’t realize that Taurens were never Paladins until Wrath. I thought the lore was that Tauren always had Sunwalkers, but no that’s not true. They were created by that one female Tauren who went to Icecrown. She learned to become a Paladin.
We now have one confirmed Night Elf Paladin, who’s to say they don’t do what the first Sunwalker did? Night Elf Paladins fit perfectly with how Blizzard creates new race/class combos.
Vulpera are just secretly Gnome Druids in form anyways right?
Yes blizzard, do it! And then void elf druids 
If we’re talking money, then goblin demon hunters so we can sacrifice all our gold
There are exceptions they’ve put in for NPCs but not necessarily created any future lore as to a race itself ascending to learn a class. Rala seems to be an exception, like the Night Elf Paladin and the Murloc Demon Hunter.
Rala Wildheart excerpt;
6 years and 2 expansions… yeah I wouldn’t hold your breath mate.
Ok?
10 chars
Blood elf druids first… Or… OR… At the same time 
I’d like undead paladins first. Makes more sense to me than orc druids. 
Druidism requires a meaningful attachment to the Emerald Dream via the Wild Gods.
Putting aside that orcs don’t give a flying gnome about nature worship, orcs aren’t even from Azeroth. Them and draenei are at the bottom of the list of races that will ever likely learn druidism.