X-Server hasn't made a whole lot of difference, PUG's are still noob (though now some horde one's have non-shitty gear), the only difference is you don't know exactly how crap some folks are.
Did have a good experience with a druid and shaman from another server the other night, was getting lots of heals in WSG (ended up running the flag at druids request due to having much better gear, I think he also felt running along and healing me would be better than him outrunning the shaman and dying if a warlock caught him up) ended up smashing a bunch of alliance from the same server (though different guilds) into the deck.
<3 druids with heal buttons, and shamans who dont run around in resto gear with some crappy 2h trying to melee things to death.