I made the mistake of logging out in Cyrodiil earlier today (well, more correctly, I gave up on loading screen every time I zoned when I had to go do family stuff) and haven't been able to get logged in all evening so that I can get my character out of Wabbajack.
If I may suggest a possible remedy, when queuing players like this, give them an option to back out of the queue instead of keeping them stuck like they are currently experiencing. If keeping track of the last zone the player was in proves to be too troublesome you could send them to a PvE wayshire automatically.
As your current system stands you are trapping players in an overcrowded zone (i.e. where all the fun is) without giving them any kind of cancel button. It pretty much goes without saying how bad of a user experience this is.
In addition to improving the queue system to the point where the player is back in control of their game time, I would also like to request that you employ mechanisms that encourage players to play on the underpopulated PvP instances. While I think most can understand some of the rationale behind making it cost to switch your home campaign, the solution for that problem appears to inadvertently be causing a much bigger problem.
Clearly players are congregating in one or two campaigns with no impetus to switch to a different one. They are in fact discouraged to move to the low population campaigns: it costs to move (your home campaign at least) and more importantly it is just not fun to play on the underpopulated instances.
So when a queue mechanism that allows me to back out is implemented, you could improve the situation by doing things like allowing me to move my home campaign for free (when my home is on a high population instance); offering a guest campaign that is low population; or even offering a reword such as a one-time payout of campaign points for moving.
Thank you for reading this and for producing such a fun game that I'd take the time to provide this feedback. It is my sincere hope that you will make addressing the poor user experience a very high priority. Based on the other posts I've read on this forum it is very widespread and a pro-active response would be most appreciated by your customers.
See you in Tamriel (I hope)!