No, I am not so familiaer with the dji flight zones and/or their unlocking procedure. First I will go to a place outside of the airspace „Class D“ (ICAO definition) and try to set the higher altitude limit.
We have developped an application, that produces a Litchi-importable .CSV File. This contains a waypoint based Flight plan around the rotor blades of wind turbines. It works flawless so far, but nowadays turbines can reach levels of 200m and above. For this reason it is important to overcome any altitude restrictions.
What we would wish in addition: the posibility of using RTK-Gps on the Mavic 3E, as this would allow us to fly closer to the surface to be inspected. May be, you could consider to offer this feature in the future for an optional additional fee?
For us Litchi is a valuable tool and we appreciate very much the clear concept of online and offline usage!