Personally I am not a fan of project specific content hidden in obscure places. I suggest considering a Project-specific-library with sub folders in it for each relevant project number. Consider having all project specific content all in one library location – and not under individual project folders scattered across the server. I think it is a waste of time and resources when users file their families on their C:Drive or in some remote location.
It’s an absurd solution in my opinion and ensures that families will be made over and over again for no good reason, due to inefficient file management. It also makes auditing and monitoring content inefficient and I assert problematic to say the least.