Unlike Windows shares, NAS devices have their own proprietary operating systems. Each NAS device is effectively a computer with it's own file system and sharing control software. It isn't possible to control the way files are stored on NAS devices without installing a low level device driver specialised for each different NAS OS, usually Linux based. This also assumes that the NAS manufacturer has allowed 3rd party suppliers access to install file system drivers. It's a similar scenario to installing popular Anti-Virus software directly on a NAS, it isn't possible.
With that said, we are open to working with NAS manufacturers, and should a method of complementing a NAS file system be possible, we will certainly be involved.