I think that's Intel's idea of the market. Other manufacturers are building boards for the embedded space (POS's, sign controllers, and such.) And there are mini-ITX server boards based on Atom, with ECC and everything. It's just a different chipset. (The NM70 was intended for mobile, but it's cheap and it works, so... yeah.)
AMDs A50M chipset and the near-equivalent E450 boards might be a bit slower in the CPU department, but they usually have more SATA ports and I _think_ they support SMART. (Correct me if I'm wrong.)
If it's any help, my Foxconn D70S-P, being a NM70 board, doesn't do SMART tests, but it DOES do SMART data reads/dumps. So it would be pretty simple to have a cron job dump the data, grep it, and alert you if there was a sudden change in the number of Raw_Read_Error_Rate attributes or something.
Also, given the price of a small/quiet enclosure that holds 6 drives, and the cost of the 6 drives... well, I hate spending other peoples' money for them, but a 1150 ITX board and a lower-wattage Pentium/Celeron dualie is hardly shooting the moon, financially. (Can probably do that for ~$150 if you shop hard.) On one hand, it's double the price of the 1037U boards, on the other hand, it's a measly $75 more than the price of the 1037U boards.