It would be good if you could threaten various npc's, just to see them run off screaming or leaving you alone, especially the stalker.  Make a command like Threaten <name> and they would either run or fight, different npcs have a different chance of fighting.  ANother thing as a side note is I'm tired of is when I ever pass a yakuza it says I spy a gangster, and attacks, I usually need to kill it, but iff I do I get a wanted level,  a good idea would that you only get a wanted level after 2 or 3 kills if a police is there, but you get one immediatly if a cop is there.  And obviously alarms would go off in stores.
THose were my 2 cents