suggestions:
1)Clerics/Buffers Flag if they Heal/Buff a Flagged rappelz-item.com/tag/player/">player.
2)Two players who are Flagged can simply kill each other with no penalties.
3)Possibly even add a method of tabbing between players who are Flagged in PVP, for easier Targeting. (Although I can see people against this)
4)Get rid of players 'CHOOSING' to flag. Players instead, Flag when they hit another player, and Flags fade after a certain amount of time of no attacking.
5)Players gain Immorality points if they kill another player who does not Flag back.