Let me add my cents to the coversation.
I just want to point out we do not zerg (well most of the time).
We have bootcamps, we actually train to be able move in a formation as good as we can. Zerg is a mindless rush and winning with numbers.
And we listen to the captain.
Aye. If he says 'Back to formation!' you wont run away hunting down that fleeing magus with half health bar. You go back to the formation.
And we sing. We sing songs while we march, while we battle and when we fall. Zerg does not sing. Did you hear a zerg to sing? Let it be Order or Destruction. Zerg does not like songs. We do. Hell I'm currently singing while Im writing this. People are watching me on the bus.
And we have beards... well there are beards in the zerg either I just wanted to mention it.
Hmm. My point is guilds like BT or the Knight Panther and these kind of events have influence in the game in a good way. People can join to a good RP and can see that it can be fun even against overwhelming numbers. Or it can be fun when your side is the zerg in numbers with no real opposition. And you wont be bored because of your comrades.
It is the quality of your companions that matters. You know: mmo