I like to use the "auto" feature of the headlight selector, but my state requires that headlights be switched "on" whenever wipers are in use. It would be great to be able to set this up as an option when "auto" is specified - i.e. that the headlights would light whenever the wipers are engaged.
Another possibility would be a button that would light the headlights when pushed in "auto" mode. The lights would then stay on until the car is switched off, with the usual delay.
Note that some cars ("cough" Prius "cough") have the headlights switch off when the ignition is switched off. While the warning beep usually keeps one from leaving the lights on after turning them on in rainy conditions, it's an annoyance and isn't necessarily specific about the cause.
Another possibility would be a button that would light the headlights when pushed in "auto" mode. The lights would then stay on until the car is switched off, with the usual delay.
Note that some cars ("cough" Prius "cough") have the headlights switch off when the ignition is switched off. While the warning beep usually keeps one from leaving the lights on after turning them on in rainy conditions, it's an annoyance and isn't necessarily specific about the cause.