What do you have rules for?

Ponder this.

Imagine someone trying to roleplay, but discovering that it wasn't as fun as it could have been. Now, how about we create rules for you to "play it right", so it has to be fun. I mean, if the rules lay it down how to do to have fun it must be fun. Right?

or

How about you have rules that strengthen and enforce the theme of the game. Rules about what you do in the game. You don't have combat skills in your game, because that wont be what your game is about. Your game is about baking pie. That's what you need rules for.

How about that?