My personal experience from beta is that i don't have any need to visit Ashran or any other capital city. Not like we have a need right now to be in the shrines, but at least for me... the place to simply hang around doing nothing has become my garrison. And for utility, there are several buildings that can give the same utility that a capital city has, and since our garrisons are in a better place than Ashran... yes... i don't think that the capital will die, but we'll see less people.
You have level 100 content in every zone, i'm not saying that they made it interesting outside the daily quest, but hey... there is stuff to do in those places even without the quest.