I found it hilarious how you could steal peoples clothes that they were wearing in Skyrim without them noticing. But that would be a cool idea, maybe if you could mug people you could demand money, shoes or a jacket or something.
I'd love a bit of mugging. Then I wouldn't have to kill someone at an ATM to get their $$$. I would like to see a bit more interaction with peds in general, perhaps random conversations that you could engage in, or people asking you questions, or even just swearing at people.
interacting to peds would be a lot better than people randomly yelling weird things that make no sense. because every time im in a car or walking down the street i hear people say "kiss my saggy balls!" (Sarcasim)
if they do include mugging then i hope they give you the money or you see them throw it on the ground, instead of Saints Row where they just crap the money out while their hands are in the air