How would you feel if they show XIV 2.0 at E3, trailer + playable demo and all. Then what you see is the exact same game we have now, plays the same, feels the same.... but with new redesigned areas, new features, new spells+spell animations and dungeons+raid. But the gameplay itself feels 100% the same and would look only like you stumbled into a new area but not a new redesigned game. The game would also have no more lag.
Would that be enough to please you or would that be a huge disappointment?
What are you expecting 2.0 to be? Just a an improved, patched up XIV or a completely different experience?