http://www.mmo-champion.com/content/...ots-Blue-posts
Like Boubouille reported on the homepage:
I was invoking this solution since ages already, as the only one solution able to revive battlegrounds, still desolate after the introduction of the random BG feature. Furthermore, it's probably the only way to make rated battlegrounds viable.We're currently expecting both normal and rated battlegrounds to be cross-battlegroup (within a region) for the launch of Cataclysm. So, players queueing from anywhere in north america could play vs players on any north american battlegroup, etc.
It will be interesting to see what kind of consequences this is gonna have on the game, for example I guess Blizzard might just wash their hands and do not worry about improving PvP and battlegrounds anymore, because players basis will be large enough to keep PvP alive also if it would be as little appealing and as little integrated in the game as non-arena PvP has been for the past few years. Probably I'm over-thinking right now, and rated battlegrounds will address this issue for good, anyway gotta see (we don't know much about rated battlegrounds yet and I wonder what kind of answer they're gonna have from the community).
Also, whenever I discussed about this with friends, they always aired the opinion that cross-battlegroup battlegrounds wouldn't be viable because of servers locations. I'm not really into computers and I wonder if it might be an issue.