First off, the matching is going to be relatively forgiving so that BG queue time shouldn't be a problem. Also, if your group is comprised of multiple armor sets of different qualities, it's going to work on an average (or at least should). So, you and your friends will still be able to play together and you won't have to worry about making sure everyone has the "right" gear to go into the battleground. All the system should do is help balance out the disparities slightly and make things more fair between teams. There are no "Brackets" involved. You aren't labeled as being a part of a bracket, it's just an average of values weighted against others going into the battleground.