We had 40 for a while, and 35+ for a good two hours.
And by better teamplay I guess I mean better squad play. Rarely on Thursdays or Friday nights do I see three squad leaders attacking the same flag, when it's not uncommon to see five of them attacking the same flag on 762 or hslan. Very rarely do we ever get loners in a squad that don't follow orders or at least try to help out. Admittedly some of that is because we never have 64 players, but even then.