I would really like them to either segregate it or implement the one data center market soon. The shopping across the dc is a nice way to bump into people. I occasionally find myself looking at the housing situations on the dc as well but I find the hassle is just blah when I want to shave off like 50'ishk off something over 1,000,000 gil. It is rare for me to spend that much but I have rarely found the visiting worlds that efficient for saving a ton of gil. If it so happens they link all worlds to a single market I'd hope that would be a 6.0 implementation. Would be nice if sooner.