As a dlc or the next fallout game could it be possible to have a vault the some australian miltary were hidden in..

ideas:
Have a few people in military clothes?
Have the quest given by Steve Dundee?
Have a large room with a eucalyptus tree in the middle, upon approaching your attacked by a drop bear (koala)???

Maybe have steve dundee as a rare character found dead in the vault...

Maybe have a museum with a bunch of australian displays??