It is NOT a 'server' or a 'file management' or a 'file storage' or a 'streamer' system and was never meant to be.
Upon reading this I conclude that I'm not in, or perhaps peripheral to, the target market. These days my entire music collection is stored on a machine living in a far away closet and my household enjoys the freedom that comes from being able to access every single bit of that collection from anywhere in the house by any member of the family.
The problem that arises for me is to be able to get those bits to a DAC of my choice. That might mean squeezing the audio out my daughter's iPod, to trying to get the bits out my Bryston amplifier. Having become used to this, I cannot see myself cloning select sections of the library to a USB drive route to feed the BDP-1.
I think I've been spoilt by the access the Squeezebox use model has provided in recent years.
As James points out, the above comes at the technical cost. For example, there's no way that many people without the requisite technical knowledge could ever figure out how to configure and maintain the above. They are comfortable with inserting a CD (or perhaps even a thumb drive) into a player, and pressing PLAY. Any more than that makes the system too complicated to be useful.
That said, I think that SAMBA/CIFS and FLAC support would provide the bare minimum to make the BDP-1 useful to me.