I wouldn't mind a spotted/seen system put in place. Have a call out transmission over the Comms to nearby bounty hunters, stating Commander X has been spotted in X system. Have a police unit (if available) intercept the target and request reinforcement from nearby Commanders. This should be transmitted with a radius check. This way, BountyHunters can respond, AND other pirates/ Commanders with a bounty can also jump in and we could have all out PvP war.
It would be glorious!