Hi, I was just fooling around, and by complete mistake, came across the "G" key. Oh. My. God. I loved it. I would up having it up pretty much constantly, but there's just one thing I'd love to see.
When in road making mode, it would be nice if the location of your cursor, or last single-left-click would appear on the map overlay, as well as a toggle-able option for user-created road data to show up on the map as well.
Just a suggestion, and I think it would really help get an idea of what the area is like, with a better ability to realistically follow existing roads.