I never got any follow up quests on this character when I unlocked Earthen. You only are required to go to the embassy on your Earthen character after completing their intro questline.
The only thing I saw regarding getting Horde membership was this quest you get as a Horde Earthen:
âFor the first time in our history, the outside world is ours to explore and experience. An off-island faction known as the Horde came to the aid of our kin. Spiritual and mighty, the honorable Horde has opened their hand to our people. Will you be among the first to go where no earthen has ever gone? To walk their lands, hear their songs and learn from their people? If that path calls to you, then I hope youâll return to share those experiences and show the earthen what the world has to offer.â
This takes you to the embassy, where you get this as the turn-in dialogue with the undead NPC:
"Whatâs this then? An⌠Earthen? I heard we might be seeing some of your people here.
Well, make yourself at home if you can.
We have plenty of rocks in this sweltering place, so I guess if thatâs your thingâŚyouâll do just fine.
JustâŚdonât eat the rocks. Do you even eat rocks?
Either way, welcome to Orgrimmar."
And that is pretty much all I really saw regarding Earthen joining both factions.
Iâm guessing an unlock scenario was omitted to save on resources, which if it was shown in the campaign, I could see that serving its purpose. At least being awakened, from the intro questline of making an Earthen, I could see Earthen having an interest in either faction. But as I said, I havenât seen anything of the Horde or Alliance deciding to offer membership beforehand.
Itâs always possible I could have missed something, but as it stands currently, it just feels a bit off.
âAttention members of the Horde! We now have new members here with the Earthen officially joining our faction! Note that despite looking like Dwarves, they totally arenât, so please show respect even if you have a bad history with Dwarves and do not attempt to lob their heads off. And could someone please deliver more issues to the Stonemaul Clan please? I can still hear their sobbing from here. Thank you, and for the Horde!â
Sigh⌠-o -
-Dream big, Ogre fans!