Biggles you wouldnt be forced to fly in an arena you could choose the one you like and stick with it. Personally Id rather fly with the guys I know (squad) and kill strangers. Unlike some people in here, I 90% of why I play, and what has kept me flying is the friends I have in the squad. Id just like to see us all be able to continue to fly together.
I would imagine at some point, numbers in an arena would start to affect the performance. Im just saying if that point came, I think it would be nice if the folks who have played the old way together, would be given the chance to continue to do so, and let the new people populate the next arena. You can't miss what ya never had.