the problem with that is that is that area would become a hub for basically everyone on every server. im not sure about your servers. but here on balmung there are around 80 people in shire on balmung at the moment im typing this (used player search function).

now there is no market board in shire. if you added one that number will most likely increase alot more. now lets say there are on average 7 servers per server group take 80 and x7 it and fit them all in an area the size of the wolves den.

now lets do that with all the servers instead which lets say there is about 20 of them. lets do 80x20 and you get just a massive cluster fuck of people in one area.

we kinda already have a raid hub, which is basically shire... the town right next to the raid area. i see this being really really really difficult to get together and not actually worthwhile.