V
Vault Dweller
Guest
Maybe psi powerscan be implemented as a perk in FO3, which can be used to lower the enemies accuracy and with enough ranks, perform mind control. After all there as a psi defence perk in FO1, and all that radiation's gotta affect the human mind in some degree. Or it could be a skill and be based on Charisma and Int, making chaisma a slightly more important trait.