I think it's likely that Cliff will work on the aliasing issue and when it's ready, add the option for 3 (or maybe even 4) amps. So it starts with 2 that sound stellar and the ability to mix cabs, (virtually) seamless switching and a crazy amount of ins and outs, but I think of Fractal gear a bit like buying a game console, the line-up at launch has a few goodies, but you know it's only going to get better once more comes out for it, they figure out how to squeeze more out of it, etc.
There are a lot of good reasons to be able to run 3 amps in parallel, for one you get a very tight wall of sound, which can be tweaked and mixed in post production. It's quite nice to run a clean Fender, a vintage mid-gain Marshall and a high gain modern amp, pretty much what Adam Jones of Tool does and there are a lot of folks that would like to be able to emulate that sort of set up.
It's also mighty nice to split bass with a couple SVTs running in parallel providing oomph and a bit of it's signature growl and a clean amp/preamp running to a chorus. Of course you can run the clean side with no amp, as direct to the board is pretty traditional, still more amps for bass is generally a good thing and I'm sure the III will get 'em, just how many at a time is 2 (for now).