Yoshi P didn't say to adding one city from each game.

What he did say was that he changed the server names in relevance to future content which they may name content after cities of old games.

Residents of Eorzea cannot breath underwater and Blitzball was not fun.
You also shouldn't encourage extra game content through extra payment per month.
It should be an integral part of our initial subscription fee.
A quick example:
If they had merged XI and Tetra Master, I think it would have been more successful.

Add more relevant Eorzean mini-games and perhaps then we can talk, hmm? :3