Way to keep people from quitting

[Mario_Demorez]

If a player doesn’t have rage and does not use an ATTACK towards an aggressor then they take a set percentage of their max hp. Combat does not end on outlawed characters upon ko.

[DougRatmen]

Outlawed is not being able to log off, red handed sounds like it already hits half of what your asking.

Committing a crime also takes a tiny bit of HP (At least a point), and the way combat works at the moment (No rage means its harder to get killed while KO, though not entirely protected against) should carter pretty well to uninterested in PVP players. I would say the only way to really die without rage (Disregarding what I've heard about non-rage KO kills) is to get ganked, openings to max, and then cleaved with a decent combat char and B12, though that might be overkill.