Imagine if/when he runs into the rumored Shang + Ermac amalgam. The business those three have with each other would be no small matter.
Besides, Goro and Kintaro both played at least reasonable parts in the MK9 story and neither of them were even playable. Give Kahn some airtime, dammit. Shang and Ermac, too. I'm hoping they have a gimmick like on South Park where Cartman was harboring Kenny's soul, except Shang is being driven insane by the many that is Ermac, so Shao Kahn finds them in that big lava chasm in Outworld, you know, the one from Konquest where Blaze is walking around, and he's about to throw them all in, but Kahn is like "nah," and he splits them back up and fully restores them, and powers them back up like he did with Sindel. Their faith is restored. And he feels super empowered because he's still got it, AND now he has two of his most capable henchmen back under his command, because he's not an idiot and he understands the importance of a strong team. Now they all go forth to fuck shit up in the Armageddon battle.
Just a theory.