I mean, who knows how good the architecture will be. For all I know I'll be able to play from Seattle on a London-based server and have an excellent connection. But in the likely event that that's not the case, I'll probably have to spend time on a US server even without it.
The real question is how many people we can get on board with this. I suspect all the interest means we'll have enough to have a contingent on both US and UK servers.
Just too bad there have to be, you know, separate servers, and not an EVE-style EVERYONE IN ONE setup.