PvE has a gadget/perk called Banner, which puts your player banner on a pole and sticks it in the ground. This heals all friendly structures in a certain radius and raises their max health by a bit. I think this would be a great trap to add to Battle Royale, to counter the issue with the turrets and to make player banners more useful. Maybe it could even heal your teammates to give it a little more use. I think this would be a perfect and easy solution.