No, it's aimed squarely at the left and right sides of the bell. The small data guys and the big data guys both.
Not exactly, but close. Some medium/big data arent going to be happy moving a decent amount of stuff out of internal. Even if you have 200TBs located in a dedicated data solution not on your desk, it can be nice to put 20TBs of it local. Or some flavor of that, even if its 20TBs offsite and 5TBs local, the nMP will be a bit of pain in the butt to migrate to due to the cost of thunderbolt.
I think the biggest issue is that 256GB is really small for OS+working files for what I would guess to be just about everyone that really needs a Mac Pro. And that getting up to 1TB for $800 is pretty damn steep and thunderbolt isnt much better given the speed drop off youre likely to see. Also what profession work flow really needs the OS and program files to be on drive going 1GB/s? Isnt it just the data read/write really what matters as the other stuff get put into RAM anyway? So why waste space on your super speed drive for OS and apps? Personally, Id rather have a slow 500GB boot drive and save the $200 bucks or what ever.