Mapping rules of thumb

When I'm mapping, I have some rules of thumb. One is to be cafeful about mapping any feature where I catch myself thinking, "that's be a great place for a control." I've found that when I see a feature and think of it as a control location, more times than not the feature just shouldn't really be mapped.When I see a feature and think it'd be a good place to put a control, I try to ask myself, "