So lets say you are a leader a large organisation, you and your wise council members all sit around a table to listen to some public opinions how to improve the economy lets say(something important). And everything goes well but the third person to come in pretends in the beginning and then tries to murder you or one person in your council. What will you be able to do? Well most of you will just suggest shooting him and killing him but I wont. Well you should be able to but I suggest a prisoner mecanic. some stun and handcuff things that makes managing the evil person easier.
Another example is if another player is cought stealing from your voult? come on, ti would make sence and it would be fun to be able to look people up in a cell for some time atleast... Having them there forever would lead to 1000 of players being looked up forever and then quiting the game :,D