Thing is it's almost irrelevant what the status of your server is, since most of the time you'll be going into a party via DF, with people from other servers. With all the good things (finding parties fast) and the bad things (game feels like a hub game) this brings. If you're lucky, you may find a cool FC and do content with them, but from what I see/hear, the FC are quite silent, each of the guys being busy doing his own DF stuff, without the need to ask cooperation from his FC mates. Exceptions are rare (Chimera, Hydra) and soon to be eliminated (both fights will be present in the Duty Finder). Basically, you can be on an empty, lifeless server and you wouldn't really know it.