I am aware that there are plans to create a separate TBC server a long while after all content in Nostalrius Begins has been cleared. But that idea worries me, let me explain why...
By the time the TBC server is created I think people will be bored of Vanilla content. Most people will switch to the TBC server, and the community will split. Not only will it split, but the TBC server will mostly be high level characters due to the transfers, and that makes it discouraging to create a new character on the TBC server - therefore splitting the community further and punishing new players. And by time the TBC server is released, I believe the population will be much lower than what it is now, so a split then may be far more damaging than if it happened today. Transfers to an updated server are not Blizzlike, so these are the problems we face. The only possible solution to this I can think of is if transfers from Begins are always open rather than for a brief time, but I have an even better idea than that...
Basically, I am asking that the Nostalrius staff reconsider how they are going to handle the expansion, and instead upgrade Nostalrius Begins to TBC rather than opening up a whole new server. That also requires less maintenance on the staff team's part and is more Blizzlike. I don't think many people would be upset by this decision, since they have plenty of time to complete Vanilla content, and The Burning Crusade is a great expansion anyway.