I don't know how anyone else feels about this, but I would really love it if some type of battlegroup system could be implemented so that the servers could pvp together rather than each one having it's own battleground queues. As someone who really loves battlegounds and not really so much world pvp, it's frustrating to spend 4-8 hours in queue waiting on a single battleground to pop.
And before the purists start having heart attacks over the fact that blizz did not have battlegroups in vanilla.. The only difference this would make would be the length of time you spend in queue waiting for people on your own server to queue. That's it. I mean.. If you would rather spend an entire night sitting in line just to fulfill you purist fantasy.. That's fine.. I just think that's a pretty silly position to take.