>1) I don't think we need to see situations like "I'm going to
>delete character X. Anyone want some free XP?"

Stipulate that PKs only give XP if the victim hasn't been killed by the killer during the last game hour.

>2) I don't think we need to funnel more experience points to
>characters who try to kill anything that moves.

It would prevent level-sitting, for one, and could be used to replace (or compliment) the distention code. The amount of XP could be set at a level that ensures PK-ranking will be significantly less time-efficient than mob-ranking.

>3) Looting isn't something we punish. If we didn't want
>corpse looting, it'd be very easy to make it impossible.

I agree -- looting should be ignored in any PK-XP scheme.