What would John Locke do?
I never played it, but I must admit, when this thread popped up, my first thought was "What would Ultima Online do?".
I wanted to explore that as a small thought exercise. I went to
http://uo.com/wiki/ultima-online-wiki/player/the-murder-system/ and got a nice high-level overview. I transliterated some of the terms and include an adapted text below:
Guide to understanding the Murder System
Attacking an innocent character in OpenPVP, or other area having the PVP ruleset, is considered an attempted murder. If the victim dies before the criminal flag timer ends, the attacker is guilty of murder, regardless of whether he actually administered the killing blow.
A murdered character can elect to report his murderer(s), reporting can take place some considerable time after the actual attack. If you are reported in five or more successive murders you will highlight Wanted to other players and come under the restrictions that apply to murderers. If this transformation occurs in a PVE ruleset area you will be instantly transported to OpenPVP.
Restrictions
You may not login to OpenPVE.
Lawful stations will not trade with you
You may not access missions for lawful organizations
Anyone can attack you without becoming criminal
Security forces will not protect you if you are attacked
You are not able to respawn in a station with a lawful government, instead you'll spawn in a nearby station with anarchy government.
Wing members will share your ‘Wanted’ status and are also freely attackable
Murderers can enter Lawful systems; however, should they choose to attack anyone within the lawful system, security forces will respond.
Murder Counts
There are two different kinds of murder counts, short term and long term. When you murder another player you receive both a short-term and a long-term murder count.
Short Term
Each 8 hours of playtime removes one murder count, unless a further murder is committed in that time.
Committing a further murder re-sets the timer on the partially-decayed count, plus adding a further count to the total.
Long Term
Each 40 hours of playtime removes one murder count, unless a further murder is committed in that time.
If you acquire 5 or more long-term murder counts you become “Wanted.”
Your long-term count is always equal to, or greater than, your short-term count.
Committing a further murder re-sets the timer on the partially-decayed count, plus adding a further count to the total.
Determining Your Status
To check your current ‘Wanted’ status check your status panel. It will list your short and long term counts.
Pardons
A forged pardon, obtained as rare salvage, will remove one murder count.
A Forged Executive Pardon is more powerful, and will remove all murder counts from a character. This item is bought from select lawful stations.
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Mind you, I'm not advocating all of this, but for instance, I was surprised by the wingman thing. And I do think that needs to be included; Wingmen should share Wanted status.