Ok, i've done a couple of these threads where people can get their idea out and let the creative juices run. The last one was on http://www.gamesas.com/topic/1460791-flora-and-fauna/, and there was a lot of great ideas and concepts.
And just to keep it straight, i'll once again emphasize that This is NOT a Suggestions Thread! Everything you'd like to see in a Future Fallout Game belongs in the http://www.gamesas.com/topic/1477125-fallout-4-speculation-suggestions-and-ideas-150/.
No, this thread is a place where you get let your imagination fly and tell about general consepts you've come up with, surrounding Groups, Cults & Cultures that you think could exist in the wasteland.
Edit: And please, no building on existing factions.