I like the idea of the new rep system and such but I can already think of a few ways it may be rough and cumbersome. Usually the simplest idea is the best especially in systems like this. My suggestion is to unincorporate the rep and criminal system. Instead combine the old can't hit blue system. Make a simple switch. Choose to be a criminal and turn on hitting blue which takes x amount of time say an hour or even 10 minutes. From there you turn grey and can attack people. If you have murder counts you have to burn them off before you can turn back blue which also takes that same hour or 10 minutes or whatever. This solution is simple and elegant making arpk vs rpk actually work system wise.