Quote Originally Posted by PMSJordan View Post
maybe even a combination deal on the subscription. Such as subscribing to both on one sub for an extra few dollars a month.
This actually WAS a thing, for 5 months, back in 2012:

http://www.playonline.com/ff11us/topics/ffxiv/

Someone already mentioned the Hermes' Shoes, but you also saved $5.95/month for the promotional period if you had subscriptions to both XI and XIV.

Unfortunately I can't really see them doing it again though, it's just not in their interest. They know all too well that if someone wants to play both XI and XIV they will pay for both.

XI is also drastically smaller that what it once was, so it seems reasonable to assume they've scaled the hardware back as well. They're not likely to want to scale that back up again for an MMO that they don't really develop for (they keep it running, but that's pretty much it).