So i've heard that they are going to be blocking off areas inorder to allow for expansion, and that really annoys me, and then i thought why don't they add it in just like that, say a new dungeon: there was a rock slide and an entrance was revealed. new building: recently built.

for me having restricted areas will be a major turn off, and might stop me from buying the game

We don't know how areas will be closed off. it may very well be some natural obstacles in the way.

good point if they do it that way i might not mind as long as it's not skyrim's border invisible walls

Because if they release all the landmass in the game and you explore everything then what else are they suppose to add in later. This is an MMO it needs to last for years and years, not 3 months. They need stuff to add. Adding one new dungeons isn't enough. Adding whole pieces of land is though.

MMOs really only have three choices for expansion content:

1) New landmasses. Nirn's known landmasses consist of Atmora, Tamriel, Akavir, and the islands that are the remnants of Yokuda. The game is set in Tamriel, Atmora is supposed to be a frozen wasteland, and Akavir is so foreign and dangerous that it's only ever referenced--Pretty much everyone that goes there never comes back (there are exceptions, but this is the rule).

2) Restricted areas. ESO is going this route--By leaving areas out of the base game and blocking them off somehow, they have new territories to expand into without creating new landmasses. How they do the restrictions plays a huge part in how well people react. With it being a time of war between the provinces, they can legitimately put up walls and roadblocks without them looking horribly out of place.

3) Cataclysmic changes. So far as we know, this never happens on a massive scale during the course of Tamriel's recorded history, so it's off the table.

Yes, they can build new towns in existing spaces, or uncover hidden spaces, but those are typically smaller scale changes than what a full expansion brings.

Pretty much this, but I won't be suprised if they bend the lore or add some new story arch to go to Akavir.

I'm hoping they stay away from Akavir as long as possible, in both ESO and the main series. I like that there's this whole continent that's so dangerous and mysterious that even though everyone knows it's out there, the general rule is to stay as far from it as reasonably possible. I wouldn't mind Atmora so much, but after WoW, I fear it would come off as too WotLK.

I'm hoping they do decide to add in Akavir later on, That would be some pretty cool high level content.

I was disappointed when I first heard that they would be blocking off areas, but it's necessary if they want the game to last. They need to be able to add new content and new areas in the future.

I'm hoping that one day, we will get to a point where ALL of Tamriel is completely unlocked. And I hope that it's mostly seamless too, not too many loading screens between different areas and provinces. (excluding Cyrodiil, that's confirmed to have a loading screen if you want to enter). I want to be able to walk from the tip of High Rock in the north, all the way to Black Marsh in the south, and have every area unlocked!

Then, they can maybe expand to one of the other continents. Like Pyandonea, where the Maormer, another race of elves, are supposed to live. That would be very cool.

To me, that sounds like the perfect way to expand.