This... doesn't really help matters. While I care about server congestion, I care about my friends not being able to create characters on my server even more.
Even if your friends make the servers explode (or rather, make them laggy)? That's no fun for anyone.

If you can find a quote where they said that there would definitely be new servers that existing players could transfer to, great. If a mod could confirm this is the case even better. All I remember them promising were some servers where everyone was starting from scratch.
It was before the legacy designation was mentioned. Then they mention legacy servers, and everyone just assumes that it means those are the only servers we can move to. Prior to this announcement, it was "There are "fresh start" servers that only allow new characters, and then other servers that 1.0 characters can move to." In other words, they originally made it sound like it was the fresh start servers that would be specifically designated.