UPDATED - 6/10/2017 : Any Survivor can unlock the chest now.
As you all know (or should know), survivors are able to disarm traps. However, I believe that there should be locked containers which require a survivor to unlock them.
HOW IT WORKS:.
Each location has a 10% chance to spawn a locked container. THe location type determines what's in the container, as well as what this container will look like/ Once a location with a locked container is spawned the chances of it happening again is decreased by 90% for a period fo 24 hours and so on.
These Locked Containers feature a lockout system too advanced for improvised methods to by-pass, so if a survivor doesn't crack it open the 1st time, they're out of luck
Penalties/Bonuses effect the base spawn chance, which is 10% A 10% decrease, would decrease the spawn chance to 9%, not 0%. A 20% increase in the spawn chance would increase the spawn chance to 12%, not 30%
Running a location lower in level will result in a penalty. This penalty is equal to a 10% decrease in the chance for a locked container spawn per level. For example if a level55 player were to run a level 45 mission, the chances of a locked container spawning would be 3.4%
Running a location higher in level will result in a bonus. This bonus is equal to a 20% increase in the chance for a locked container per level. For example, if level 20 Player B were to run a level 25 mission, the chances of a locked container spawning would be 20.76%