exnemesis :
So apart from boot times, what advantages would a normal schmuck with one of today's better Sata or Msata/m.2 ssd's as their OS drive?
Right now, almost no advantage. But take into consideration this:
Even if you have a fast current gen SSD, it is STILL the bottleneck for a lot of tasks. (Well, to be honest, nowadays the
user is usually the bottleneck for most tasks, with SSDs being second).
So it all depends on how sensitive you are to apps loading time and file copying. If you have a fast enough cpu+gpu, you might get a bit faster loading times, more noticeable if you do some kind of storage intensive task (like video).
The
real advantage will come when developers tap into this, and they stop limiting themselves because of slow storage, and work this a bit like a huge persistent RAM. Instant hibernation, no "loading to RAM" delays, and many other advantages (years from now).