Ok, so there are all the set locations you can enter from the world map... but what if new ones were added periodically for a certain amount of time? You would still have to "discover" them like normal regardless of whether or not you can see the square on your map. Plus, locations that are really cool could become permanent. Couple of sample locations:
1. An abandoned factory - maybe it has a good amount of junk and possible electronic parts to scavenge?
2. A Vault that has opened and operates like a guarded town, protected by Vault police?
3. An abandoned NCR Fort... would have a Workbench and probably random mobs to fight.
Just an idea I had earlier, sorry if it's not actually new... anyway feel free to expand/provide feedback
Also, I have no idea if this could be implemented but it would be damn cool
