What3words would be a useful location tool in Sky Demon for aviators, particularly heli pilots. It is easy to make a mistake when entering waypoints using long/lat especially with the different formats. what3words.com spells out the advantages and they have apps for Apple and Android. Helipads are often at very precise locations and What3words provide this in 3 meter squares. Having this option in the 'create new waypoint' menu, that then converts into long/lat automatically, would be a very useful and make entering waypoints that much simpler and less prone to error.
What3words is catching on fast. It is global and in 30+languages. Postcodes are not universal, nor are they always sufficiently accurate.