First of all, the basic idea of having a huge so called "Mega-Server" for everyone is great. But if that means, that in this whole game community every single name needs to be unique there will definitetely be a fair amount of frustration for the players who like to play with their favorite and -in some cases- not uncommon names.
I am aware that a character system that would allow duplicate character names need some other technique to identiy an ingame character, but imho it would be worth accepting this challenge in development to make every single player happy with his character and name choice. Not to mention that a world with duplicate common names is far more realistic than the same name in partly absurd variations (e.g. Aragorn -> Ahragorn -> Aaragorn and so on...)
Please feel free to take part in the poll. I can't imagine that I am the only person worrying about the upcoming name issues...