We are changing the way respawns work in Battle of Gilneas. The following is an excerpt from the PTR Patch Notes:
http://eu.battle.net/wow/en/blog/1959705#blogGraveyard Changes- Players who die at a control point that they own will now be teleported to the next closest graveyard, instead of the one at which they died.
- If a player's team owns the Mine and Waterworks, and dies at Waterworks, they will be teleported to the Mine.
- If an Alliance player's team only owns Lighthouse, and dies at Lighthouse, they will respawn at their base.
- If a Horde player's team owns Waterworks and Mine, and dies at Lighthouse, they will respawn at Waterworks.
it's impossible to kill everyone before 1 or 2 come back.