Caustic traps can be exploited.
During one of my games yesterday I was paired up with two players on xbox that were in a party together. When we landed to begin looting, the Caustic on my team placed his traps in the door way of a house i was in. Normally you would just kick the doors down, and slip past the trap. However, his friend had kicked the doors down already, and the traps were placed right in the threshold. Then placed a second on top of the first traps to block the entirety of the door. They came out of party chat to tell me they got bored and needed to make their own fun.
I was left to die in the ring. Teammates should either have a reduced collision box for his traps, or be able to destroy them 45 seconds or something. I threw grenades, and shot everywhere on them trying to destroy them, to no avail. Another fix to this problem would be to allow the windows to be broken out.