My 4 Shammies just hit 69 a few days ago with the goal of stopping at 69 for token farming. I made an effort to try and get all the best quest gear i could without leveling. Once I did that I have been hitting the BGs daily, all 3. To sum it up, 60-69 battlgrounds are so EASY if your geared in quest blues with your multiboxing team. Some require more work then others (WSG) but all are 10x nicer then 70 BGs. The only thing I have reservations about is the Queue times on the reckoning battlegroup which shoot up to 30 minutes at times (these are standard for people it seems, nothing to do with my premade of 4 people)