toadhammer :
Why are these expensive NAS boxes still on 1 Gbps interfaces?
10Gbps is still expensive. If you want your whole network 10Gb, I don't think I've seen a "small" hub with less than 8 ports or less than $250. I suppose you could get a 1GB switch that happened to have a single 10Gb port for switch-to-switch uplink, but then you are talking about bigger switches (24 port) and it's still several hundred bucks.
Not that you couldn't put all this together at bargain basement prices, but then you are building a 10Gb network architecture around a dinky 4 disk NAS. No business would be likely to do that....they'd be paying for a larger NAS and a fatter pipe.
Quantenna is making a 10 gbe router in the home FF due out later this year. http://www.washingtonpost.com/blogs/the-switch/wp/2014/04/15/the-insanely-fast-wi-fi-router-youll-probably-never-need/
You could just pop a 10 Gbe PCI-e card in machines, as well as the NAS, and - BOOM - all of a sudden you have a small post production studio editing 4K content from a little NAS server box. You could even fill it with TB SSDs if you wanted.
Even before that comes out, though, you could network computers directly in a small office without a switch.
But, I agree, that it'll be exotic for a while.