[Thanatoses]

Personally, I'm a fan of change, based on necessity or convenience, cross-examined by the level of risk.
Its far too risky to introduce a new concept to gangs, chance of rejection, time-consumpto, necessity all point toward a negative direction.
If this concept worked once, it can work again. Players have changed according to their environment, PKing is no longer as competitive as it used to be. Few players even strive to better themselves, we need to figure out ways to increase competition rather wasting countless hours in inventing new NPCs to do a working-mind's job.
Start Ranking Players in PK, Spars, Gangs and every aspect of PK. Start ranking gangs, businesses and etc. I guarantee you, every player-interactive aspect of Era will be improved without the creation of a large system. Notoriety is subconsciously on EVERY player's mind. And everyone is good at something, therefore I think a way to rank players in their activities (not just gangs or pk), is the most:
Necessary
Convenient
Low-Risk
Measure that can be taken.