seems like any settlement would want more brahmin around. in fact, people should be taking them away from each other. so im thinking of a mod that makes them a valuable resource in game. like you could herd them back to town and the mayor gives you caps in exchange. default behaviour is they run away from you so you'd have an item that could knock them unconscious and make them docile for a short time, or lure them in with food. animal friend perk also becomes more useful as brahmin wont run away from you.