actually had a similar idea to this but to expand on it a little? I was thinking maybe there should be small military groups/research teams in the game? these would be very well equiped and highly skilled soldiers that only operate within a very small specific and fortified area while in and around that area are where you ideas come in they would when spawn come with MRE's and a good stock of equipment but airdrops would regularly drop in supplies in an area around the soldiers faction bases and you could, possibly, reach the supplies before the soldiers and the drops would contain weapon parts as opposed to whole new weapons for maintenance and MRE's to feed the soldiers. to add more detail I'd say that the soldiers would be always hostile, ordered to kill anyone they see since they're trying to cover up the incident anyways? and maybe you could find some story elements in their base maybe news on whats going on outside obviously all this would be up to the developers XD I do like your idea!