Guild Wars 2

Other suggestion to avoid Zerg is:

Put one Castle at each map !

AND

Change the model of Eternal Battlegrounds.
Like UT3 Capture the flag (Type game), put 3 spot to contest the Castle.

vesica tempestas.1563:

I like the idea, the problem with commanders on map is that it quickly becomes a zerg train that is pretty boring. Encouraging small groups with a size limit could drive out a lot more smaller melee fights.

Yes, The ideia is each Tag type have the limit number.
That away is easy to see the purpose of group.

The idea is create a new tag to small groups (or Roamer)
The design concept is merge the actual icon with the basic professic at player.

See the picture at attachments.

Pre-requirements:
1. have the commander Tag
2. have the minimum level, like rank 300 (Bronze Soldier)

Spend some stuffs:
1. Gold coin
2. Badges of Honor
3. Proof of Heroics
4. Memory of Battle

And do one quest:
1. Complete each objectives (Castle, Keep, Tower, Camp, Shrine, Sentry, Dolyak)
2. Complete one new WvW reward tracks
3. Others