Orthomosaic maps can deliver a high amount of detail as they are composed of many individual geo referenced photographs to form a high resolution map. Orthographic maps can be used to measure true distances as this process geometrically corrects the distortions inherent in an aerial photograph due to topographic relief, camera tilt and lens distortion.
geoTIFFs can also be created from the Orthographic process which can be useful for GIS applications
here are a few examples of how 2d maps can provide useful information...
Valleys, dams, vegetation, buildings, roads and animal tracks can be viewed as a whole or zoomed in to fine detail. Distances, slopes and volumes can also be measured using the online processing tools.
2d Maps can provide a unique perspective for designing Gardens, buildings and features on private property. Maps can be annotated and overlayed in GIS with information about water and power lines. Also a good way to share information about the property online for events, developments and real estate.