Well I guess I'm a musician and not a market analyst for a reason but doing it this way feels like a recipe for failure to me. Correct me if I'm wrong but I think other new(-ish) players on the market arrived with some unique features to distinguish them from the competition (Reaper, Bitwig, StudioOne). They each have a small but loyal following.
Bluntly, to me it doesn't feel like Sonar can really turn heads if you leave out things like ARA and AD. I've seen this a lot first hand when I go to other studios where everyone uses PT (big budget recording), Logic (fellow musicians/producers) or FL (the hip hop/EDM crowd). The only thing that impresses them is Melodyne and the quality of AD. For the rest it's "it looks crappy and I can already do that in Logic/FL/PT".
That said, in a way I hope it is successful because for better or worse somehow Mac gets a lot more respect amongst musicians. I would maybe feel less defensive when I say I use Sonar.