the option to have the weather map overlaid on the navi screen.. because how many times have we driven through a bad rain/snow storm and wondered... when is this going to get better? have the option to turn on the radar overlay on the navi screen so that when you are in a route or even just on the navi screen it is displayed. this could also lead to a "Avoid severe weather" option (similar to "avoid toll roads" when using navigation.