Lat/Long accuracy for global mapping

I love this app for all the features it already has. So first a genuine "thank you" for that!

With that being said, it would be great if I could create my map with accurate lat/long representation and could then convert it to a globe after creation to check for accuracy of scale.

Sorry, just trying to think outside the flat paper map. Also, trying desperately to create a planet, and need some help to do it accurately.