It will also be easier on Euro Player's latency if they want to try and queue on the US realms also. Can anyone with influence in the wow community tweet holinka / ghostcrawler about it? I tried but i haven't received a response yet.
ATR used to be on east coast servers. At the time, pretty much all the top teams were west coast. Since blizzard/blizzcon was too, I think they were cool with changing it after a lot of people whinged.
I'm totally cool with a central-hosted ATR. Not east though.