We want to put our names in the hat as users who would benefit greatly from this. We currently use a Mission Planner/Pixhawk solution to capture our images and both Copter and Plane support terrain following. We are dipping our toes into DJI as a platform and thus would use DD to both fly and process but we just can't risk a terrain incursion and aircraft loss. For instance, one property that we are flying has almost 300m of terrain variation which is handled seamlessly by our current solution.
As others pointed out, other competitor platforms already offer this as an option so it would be great to see DD implement an optional Terrain Follow tick box pulling data from SRTM like everyone else.
Many many thanks!