Not sure if possible, or if the DD legal team would allow you even with disclaimers, but it would be awesome to be able to have an airspace overlay that could be turned on/off within the app/online. As of now, I use the AirMap app (which is limited since it only shows a single circle to represent an airspace cone, opposed to the graduated floors that occur further away from major airports), the SkyVector.com website (which has the sectional charts, but is difficult to pinpoint exactly where you are) and some other sites/tools. DD is the app that typically takes me to the higher elevations due to the type of projects I am using it on.
Just a thought!