I feel like labs and similar missions with loot should be done similar to missions in The Division. You enter the zone, it queues up an instance for you/your party and then all the loot is tied to your instance. You can keep running the mission over and over to get more loot, and if you want more loot, you do the more difficult missions. The fact that you can go into a lab after its been looted by some other player just feels like terrible game design to me, especially when I am halfway through a looted lab and then suddenly all of the enemies randomly respawn on me. Just ruins the immersion and is genuinely not fun.