Misnomer. The server does not control your ping time. The hops (routers) on the Internet do. The last mile (i.e. your initial connection to the Internet) is not much of a factor in the overall scheme of how data gets from one point to another and back again.
We are actively working towards getting the servers moved from thier current location. It takes time as we must minimize the downtime. A lot of planning, shipping, reconfiguration and so on are required.
I should add, a relocation to another ISP does not neccesarily mean there will be improvements. If your local ISP's routers are swamped, there is nothing that will be cured by moving the servers.