I have played other games that when you crashed, and had to relaunch the game etc if you were in a instanced battleground it would save your place in that instance for 5 min after you crashed to give you time to get back in before it gave up your spot and placed you in que.
Something like this would be great in this game, seeing how unstable Cryodill seems to be, it is really annoying to wait in que for 45 min to over an hour get into cryodill and then 30 min later something happens and you crash and relaunch only to be stuck in que for another hour .