I think it'd be cool if there was an actual bounty hunting. You could get a contract for someone around your level to hunt, but you can only hunt someone who is also a bounty hunter. The hunted would get a notification of some sort that there was a bounty on their head, and prepare to defend themselves. You should only be able to accept one contract per day, and be hunted once per day. When you see the predator or prey, their name tag would be red instead if blue. It'd make explore more a bit more interesting than just grinding up your levels by waiting at the spawn point. Sorry it's all just a jumble if ideas and not really organized.