Are they really adding cross-data center visit?

[ForteNightshade]

This is pretty much going to happen, if you are visiting another DC, you'll be on their PF/DF.

I wasn't talking about visiting but if say, NA and JP's entire PF were merged together in one massive cross CW system. I can't imagine that'll be how it operates but if it somehow did happen, that's where things would get... interesting.

As a North American who lived on Tonberry I can't say I understand. Can you elaborate as to why?

This is assuming PF were merged altogether not if you simply visited say, Mana and only had access to Mana's PF. For example sake, say I queue into DF normally on Aether. I could get players from every Data Center. I doubt they go that route and it's simply limited to the Data Center you happen to be on though. In any case, if that actually happened. It'd cause problems simply due to the fundamentally different attitudes.