One of the elements of Fallout is how much mind control there is in the world - from both Vault-Tek and national governments. Now I will admit that it’s a bit sexy imagining all the ways this could be used in a story. From vaults where mind control experiments are carried out to settlements in the present ruled by a man backed by certain techniques.
I also have a more recent idea, one after Nuka World DLC cane out. I’m there their are three factions, two of which are perfect for our needs. The first is the Operators and they are a mafia like business focused raider group. The other, the Pack, are an animal themed barbarian like raider group. The idea i have is the main character allies himself with the Operators, researches more advanced forms of mind control, and uses it on both lower ranked Operators and all members of the Pack. My thought is he gives each Operator a now loyal and submissive Pack member (male-male, female-female). He of course takes Mason, the alpha of the Pack.
From a setting perspective this leads to war against the Disciples and the conquest and then reapir of the park. Which means it could be opened for business, with some fun twists.
Just wanted to share the idea.