Permissive, but tough. I prefer to sandbox things (though it's really hard, so i frequently fail on this front), I allow essentially any 1st or 2nd party (and some homebrew). World is a very metropolitan, highly fantastic place to account for all of this. I allow any plausible course of actions, including ones that could easily circumvent a challenge. However, I also allow you to make idiotic decisions. Your success in your hands, not mine.