Blizzard just put the multi mass on line thing in Azeroth.
it is how these games should be played in the first place. for YEARS and YEARS (instead of seeing only people
2 months after a launch or a patch content).
Multi millions instead of a few dozen.
And Blizzard found that key: open world play across servers (adressing ALL that public) in a seamless method without even a loading screen in sight.
Awesome. Just enjoy the new revolution in Multi Mass On Line Play anno 2013...
You ain't seen nothin' yet/
Just like phasing is now being tuned rightly (farms to grow etc...), this technique will be refined with cross server guilds, AH's, adventures, faction changes etc ...
it is only a matter of time before Elites will be seen in all leveling grounds too
EDIT: With one blow Blizzard put a stamp on all those other single server based MMO's/... "DATED and DEAD" (after 4 months launch).