This is incorrect. 1.0 had a seamless world and their servers couldn't handle it. The lag was insane in that game. Just starting to craft it could take your character 1-2 minutes before they finally sat down into the crafting position.
And remember the ps3 version didn't even exist in 1.0. Could it be limiting it somewhat? Sure. But to say this is completely at the hands of the ps3 is not knowing FFXIV's history.
I think some need to be a little realistic. 1.0 got dumped on. A lot. It was a complete failure. And one of the biggest gripes they received was they cheated making the world big by copy-pasting the same trees and rocks over and over again. You couldn't even navigate in the Black Shroud without a map because it was one big maze where no matter where you turned everything looked the same.
So they made the decision to completely redo the world (understandable considering the backlash). But this is still a product that cost them millions and they had to spend even more millions with basically no profit until they asked legacy players to pay for it.
Simply put, the zones and the smaller world is something that they could do quickly and efficiently.
Now, does this mean we shouldn't ask for more? Nah. I just want people to at least appreciate the world for what they were able to do in such a short time-span and ask with the perspective of hoping they add more in the future (which I do believe is their intent).