WvW Ghostly Pilgrimage
it would be abused if you could see other players to plan sieges or inform your sever of incoming sieges. on top of that there are way to much PvE players in World vs World that a lot of player who enjoy the PvP aspect of WvW cant even get in. i am not saying PvE is bad in WvW i am just saying in currently way the game is lay out it can be very stressful for player who enjoy PvP to be Out manned because half are sever is doing PvE.