so first, the open beta char are not causing the problem, the servers that are locked from my experience on behemoth are actually full, there have been queues (short) to log on all day yesterday, SE knows how many people are actively playing on the servers based on active service accounts and numbers of people logged in on each server.

Now yes we need more servers for NA/EU, but the truth is more servers will not allow us to get our friends onto the locked ones. I see only 2 things that are going to help with that in the near future:

1. allow 1 free server transfer off a high pop locked server to a brand new server which our friends can join us on
2. people who are not that far into the game can just move to a new server to join there friends waiting (will not work for legacy, but the rest of us are not that far in)