Just thought it would be neat to have certain areas where you can enter, which will load a smaller, more intense, purely PvE area, which you can either join another stranger, your friends, or go solo. Additionally, you can select which person to join up with if it's random and see their weapons and ammo. If you don't seem to be prepared enough, then other may skip you and choose more highly kitted players.
Ideas:
The difficulty of the area would be ranked by a Risk Meter: 0-10
AI could be used to create a short bio of the person's "preparedness"
If you die in this area, you lose all of your loot. You keep what you find during the mission if you escape alive
Health remains the same as when you leave the mission area
People you enter a PvE area with can give you a "Teamwork" Rating which is visible for future matches
Make multiple entry and exit points as to avoid people camping entry and exit points
Can include access to these missions from Community Servers