Doming can be mitigated by a few things. First, the use of ground control points that have known coordinates helps processing applications rectify or adjust the composite output. Second, the image quality can still aggravate the output. GoPro lenses are known for this. Most drones use a lens that does not create the fish-eye issue. But some lenses use a rolling shutter. This will capture pixels that can be warp the image. Mechanical shutters capture all pixels at once.
In addition, i typically fly a planar pattern with nadir camera shots for the image capture. This generally suits topo as an end product. But if i need to capture a building or quarry with steeper slopes, then I will do a planar flight with the camera at an oblique angle.
Does any of this make any sense?