I dont know if this kind of PvP rules are discused, but i have an little exemple of what i saw at other RP-servers
Clan or faction Tag
1. If you have an tagget charr like Interspace-[IND]Intercessor-Vtec, Can be attacked by an Charr like an Xeno-[Phantom]Name (Exemple). Ps: if clan or faction does not exists in Faction status post. the 2nd rule wil be the same action taken by the 30 day ban. (RP-Charr) (RP-Charr can attack RP-Charr) (RP-Charr Can Not attack an non RP-Charr)
2. If the charr does not have an Faction/Clan Tag Between the Affiliated tag and charr name, The chances are that you get an 30 Day ban if you attack an RP-charr. Unles you attack same sort of charr that is not RP-Related. (Non RP Charr) (Non RP-Charr can attack another Non RP-Charr and not an RP-Charr)