For the online version -
Need to be able to add and manage saved favorites just like on GMaps.
Need to be able to see my saved places on the map just like on GMaps.

For the in-car version -
Need to be able to touch a spot on the map and save it as a favourite or navigate to it or add it to the route Just like on Google Maps.
Need to be able to touch on a map icon and get more info about what it is, ie a crash, speed camera etc.
For alerting other drivers about road conditions, you need to add "Debris on Road" as an option.
When adding an alert on the live map, need to be able to choose exactly where the alert is and NOT where my car is right now. Remember, we're driving and need to focus on what we're doing to get through the hazard. This is how I'd like to able to do it - Tap the warning triangle, choose the hazard from the list, tap the map for it's location. Then allow up to 10 seconds for me to be able to cancel in case I've made a mistake.
The way it is now, I couldn't be bothered to submit because it's not worth the hassle and it's behind me now.

For the App version -
After touching a point on the map, menu options need to include; Go here, Save as a favourite, and (if currently on a drive) Add as a way-point and Go here Instead. Hiding them in Preview Location makes for a complicated and unintuitive experience.