.This is just a little brainstorming to get you thinking.
PvP accountability. Let's incorporate a PK penalty system to add some risk / reward possibilities.
If you are killed by a player and you did not land the first blow you will receive a death ticket. This ticket can be turned in at your Totem which will then apply a set amount of pk points to the killer. These pk points will be viewable by all of your tribe mates and will have the killers name, tribe, and alignment listed. This info will also be posted on the forums for all tribes of your alignment to see.
This will begin to generate a most wanted list, which over time will expose the griefers and allow the community to handle it.
As you rack up pk points you will accrue indenture time. If you are killed by a member of an alignment in which you have gained a lot of pk points from killing their members, you will spawn at their totem and entered into a "captured" quest. These captured quests will require you to scavenge a set amount of resources based on the amount of pk points you have earned. These resources will then be turned over to the capturing tribe. During your capture quest you will earn no xp and will be unable to enter combat mode or be attacked until the quest is complete. Once complete your pk points are removed and you are transported to your totem.
Tribe alignment and PK points
Good = G
Evil = E
Neutral = N
Defaut is neutral
G vs E or E vs G 1pk point per kill
E vs N 2 pk point per kill
G vs N 2 pk point per kill
N vs E, or G 5 pk point per kill
N vs N, G vs G, E vs E 15 pk point per kill.
Each pk point could be worth scavenging a set amount of "usefull iems" from the capturing tribes land.