I was recently with a group of five or six people, not thirty, and we captured a couple of bases. Then the other team figured out where we were headed, and we ended up in a huge furball. Good times.
I have also been a part of the Devil Dogs missions, where there are several groups of bombers sweeping in and killing a base before getting troops into town. Working together with the team to capture the objective was a lot of fun.
Then there are times when we are met with a horde of defenders, and they keep us from taking the base.
Frustrating.
But still fun.
I have been on the defending side, as well. Few things are more satisfying than launching with a bunch of team mates, and stopping a horde from taking a base.
So, the environment is fine. The game play is what you make of it. Instead of changing the environment, change your tactics.