It would be great if there were more states for People entities than just home, not_home and the different zones.
Two examples I can think of at the moment are sleeping and driving.
sleeping would be very useful for automations with children, or for an automation where the lights would dim but not turn off if only one partner were in bed, and turn fully off once a both partners are in bed.
And driving would be useful for tracking miles, drive time, etc, over the course of a day.
Other ideas welcome, but those are two that I could think of.