Considering there are multiple topics on this I'll say what I did in the previous thread.

The reasoning behind the all dungeons becoming instanced content hinges on one fact. "Cross server play" you can't do open world content with such a system.

I prefer open world content and I hope that it doesn't take a backseat to instanced content...I'm personally worried that I wont be able to do anything without entering a instance in FFXIV V2.0