I hate the blue circle idea. Doesn't allow for skill or proper battle tactics. I've found during gameplay entering into what looks to be a decent gun fight ends up with the enemy or myself ditching the fight and entering into a running simulator.
I reckon ditch the blue circle of death and instead as the battle rages on have a blue zone (like the red bomb zone) appear around each players location on the map and slowly get get smaller. But not small enough to give away the exact position. That would get rid of the running simulation and allow for better gun fights and tactics. Utilizing 100% skill to win. Rather than time and luck not to die. And if camping is an issue than bring the death circle In late game rather than from the start, along side my idea.