As much as I'd like not to get a bunch of RP-ers when I go into dungeons (who are still RP-ing and not focusing), Eureka (take that ERP elsewhere...), and other instances...

I don't know if there are enough RP people to warrant an entire data center. That sounds like a lot of hardware costs for SE (As far as I can tell from things they've mentioned here and there during interviews, a single "server" is actually more like a set of linked physical servers, plus extra physical servers to handle cross-world content, retainers ,etc...). I don't know if I'd want my sub to go up if the data center won't be packed full of people.