Have had my Phantom 3 Standard since 2017, used Litchi for an aerial video of a section of the river Great Ouse, and for the past few years have used Pix4d Capture (till they pulled the plug on it!!) to produce detailed maps, summer and winter using webODM, of a 28 acre woodland for the manager
Really pleased that Litchi are now taking on polygon areas, and struggling to get it to work with my old drone.