Thank you for your answers. To answer your question about vigilantism, think Daredevil or Batman. Not on the powers side of things, but the ethics. When your criminal types are less take over the world types and more the drug pushers and muggers. While not going full kill mode, the retribution will be swift and painful. I should note that the characters will not be delighting in this behavior, but are not looking to hear excuses for why that guy is doing bad things again.
The reason I ask is that this game is cooperative, and alienating other players would kind of defeat the purpose.