They should scrap the PS3 version.

[Ladon]

Nope. Zones have been split to reduce load on the servers. It has nothing to do with memory limitations, as assets are streamed. Games don't need to load all the assets of a zone into the ram anymore. if it did, even 4 gigs wouldn't nearly be enough.

That's part of it but there are methods to deal with this in a seamless world as well. They were also obviously split to deal with memory limitations as well.

Also you can't really stream the assets of a MMO or any online game for that matter very well because it's too expensive to keep track of what you would need to server side so that the client is able to stream in the asset before it is displayed. Streaming is only realistic when each display frame is predictable. MMOs are anything but this.