I would absolutely hate playing with people I did not know. Being able to enter with my usual PVP group would help some, but what we'd be missing then is any hint of rivalry vs. a known enemy. I love getting my ass handed to me by the Horde's top team/player one game, and then having the opportunity to avenge my many deaths a few hours later.
There are so many teams across so many servers, that I doubt I'd get a similar experience in a cross-server PVP matching service.
It's a little bit like our Onyxia encounters. How good did it feel when we brought her down? That was our what, 12th try? Would we have felt the same sense of achievement if, instead of Onyxia, it was some random monster with a random made up name in there each time?
There are so many teams across so many servers, that I doubt I'd get a similar experience in a cross-server PVP matching service.
It's a little bit like our Onyxia encounters. How good did it feel when we brought her down? That was our what, 12th try? Would we have felt the same sense of achievement if, instead of Onyxia, it was some random monster with a random made up name in there each time?