Kinda just kit pvp with teams where you can't hit each other. And betrayal is a very good tactic killing an OP person, it's fine how it is + donator team vs stone team as mentioned before would be unfair.
I feel as if this defeats the purpose of having a fair player vs player game. Does anyone know what antitrust laws are? Well they are regulations in the business world that insure there is fair competition for all business. Kind of like making sure large companies do not start making it impossible for smaller business. Kit pvp cannot be stricken with huge clans that run the server. I am all for teams! Just clans, that is not nessicary.