Guess you haven't played Operation flashpoint.. LOL.. LOADS of land, fully detailed, with nothing to do.. this is why this game was so broken.
No I haven′t but I worked with nearly a dozen different 3D Engines in my life. No devoloper would invest such an amount of time to build those
areas just because you might see them from a single spot for a very short amount of time. It would be different if Skyrim had no mountains and you
could see far into other regions from nearly everywhere. Also even if you have a spot to look beyond those mountains you won′t see most of what was build because
of the limited view distance.
Anyway I have no real idea why they did it as they did it. I can′t really imagine they plan to cover the whole landmass in the future.
Maybe it′s just a gift for modders.
But actually I wish it was that way. Imagine they would extend Skyrim like MMOs do it. Same engine, same Graphics, same Game Mechanics
but each year you get a new region with a new plot. That would be so great !!! Not like waiting for another 5 years as it was in the past.
Basically like a single player MMO. For the Elder Scrolls series I would even be willing to pay each month.