Hello Alexey,
As these orthos are a result from an automated process using Python scripting, we aim at obtaining orthos that look as good as possible fresh out of the pipeline.
We're going for the mosaic blending mode, then a quick editing for now, because it's shorter than average blending mode editing to rectify the color (note that the one I linked had the Color Correction enabled)
Assign Image is also a manual process, am I right?
Another problem, our processing areas are quite small, only small parts of a 75-hectares area covered by 1400 photos at 90m flight height, so seamline editing doesn't work. Any reason for it? Is it because the generated orthomosaic used the bare minimum of photos?