The more I think about it, we might as well wait until the Mission Theater thingie in AH2.
After all, that may or may not "bleed off" enough of the player base to make this "crowded MA" discussion moot for a while.
Rather than another MA, perhaps we need another different "specialty" feature to attract players and reduce the MA load. For example, if the CT was drawing 200 or so, would we really have a problem? If the CT drew 100 and the new AH2 drew 300, would we really have a problem? What if the player base or HTC instituted a nightly "prime time Special Event" or something like that to reduce MA load. Lots of options other than another server or arena.
I'm willing to wait till AH2 to see how it plays out.