I support this game getting an event 100%. It's a Square Enix title, the best game I've ever played in 2017 (as of today for me), and it deserves way more recognition.

How I think an event could work: Allagans. Have 2B, and 9S land in a random area, causing a commotion. They say they are here to check on humanity, and the plot of the quest ensues. Eventually they realize that the Allagans are gone, and resort to going back to space during the end of the quest.

Rewards: 2B, A2, and Anemone outfits for females. 9S, Adam, and Eve outfits for males. Pod 042 minion. Pod 153 minion. Furniture could be one of the common robot enemies of Nier Autamata. They could also give out its helmet, and maybe a robot suit for both genders.

Why I think this is a good idea: It's an actual Square Enix title, and not some random insert whatever event suggestion. It's also a good game, and I think a lot of its fans play XIV.