The current problem is map design. The map is too small and the trajectory of the howitzer is too straight, making it almost impossible to achieve normal curved firing.
At present, the howitzers in the game have ammunition initial velocities of over 700 meters, and their trajectories are straight, making it difficult to achieve curved firing through drone reconnaissance on the current map. With the current map design and size, only low initial velocity artillery such as BMP3 can achieve curved firing.
However, the mechanism you mentioned can be applied to naval battles. Currently, reconnaissance aircraft in naval battles are not very useful. This mechanism can provide a new way for reconnaissance aircraft to guide shooting.