This issue is increasingly frustrating to my friends and I because several of us are on different servers which makes it difficult to do any PVE together. Some are considering leaving the game because of this.
It would be nice to have some clarity from ANET if guesting will ever actually be worked on because as far as I can tell, the only information available regarding it is that “…there is no estimated time of deployment” (http://wiki.guildwars2.com/wiki/World)
We would be perfectly happy with the solution from GW1 where you could select your overflow instance and easily meet up together.
It would be nice if there was a way to queue up to join a FULL server because its unrealistic to have people logging in at all hours of the day to check availability.