Its possible to sketchfab dev team put a feature to automatic transform 3D Scan models into a Game Assets ?
For example, reducing polygons with Quad retopology and make automatic projection of textures.
This will be a very good feature for fast production, after, in a near future we can select assets with a Sketchfab plugin directly on Game Engine, like UNREAL and Unity 3D. Like a live market place but from our collections. The Download button with the option "Download as a Game Asset".
Recommendations of source codes to implement in server level:
And is possible to use blender running without gui, with yours built-in retopo tools in a linux server with python scripts to make this process as a server task in background.
Here a video with blender easy retopo features: https://www.youtube.com/watch?v=rUzJefYNQlI
Its possible to run this tasks by a script.
Example: blender --background --python myscript.py