I grew up near Seattle and worshiped the Pac-10 -- up until the BYU rejection. Now I hate every Pac team except the Dawgs, and I'll actually root against them against a non-conference team, just because of that atrocious move. I would never have pulled for, say, LSU over Oregon in the past, but I sure do now.
FWIW, the few Pac-10 grads i've spoken to (Berkeley and SC), they have felt the Utah/Colorado pickups were weak and that BYU was a no-brainer. But then these are Westerners who understand the footprint and CFB history well.