As far as fallen generators and scavenging them goes i think that a "radioactive" pluggin would be a great addition. When a town falls the gen "explodes" covering all the protection with "poison gas". this poison gas retreats by 5/10 blocks every hour/minecraft day and when you walk into the previously protected zone your oxygen bubbles appear as if you were swimming. The bubbles would then slowly get used up and they steadily increase usage the closer you get to the center of protection. This would allow for fallen towns to be accessible once they are fallen but are harder to scavenge fully within the first few hours to give other people more chances to get to the town.
Discussion appreciated.
Discussion appreciated.