Armenia came 3rd in this poll:
https://forums.ageofempires.com/t/poll-updated-which-civs-would-you-like-to-see-in-the-game-all-popularly-requested-civs-included/86089/1
Caucasus DLC first in this poll:
https://forums.ageofempires.com/t/poll-the-future-of-dlcs-and-what-would-you-like-them-to-see-on-them/154100