And graphic performance is much snappier there for every DAW I've tested (compared to El Cap). I've been testing on a 2012 Mac Mini and it's zippier than my trashcan. Of course there are other reasons you may have to wait to upgrade (I'm still waiting on UAD drivers), but Sierra appears to be a much better performer than El Capitan. Eventide (Added Sept 24th) Eventide have announced that while there are no issues with Eventide plug-ins on macOS Sierra, there may be incompatibilities with your DAW and other 3rd-party plug-ins.
Think about it, the Atrix is going to take advantage of cloud computing just like you are saying google wants, the limit on the phone is 48 gb, so using things like google docs and office live as well as the hopefully upcoming google music and movie store for your streaming needs would only make sense.
I was at DES this year and all everyone was talking about from attendees to different manufactures was that this set up was the most innovative thing to come out of DES in years. So don't discount this just yet as this might just be the future of mobility and converged computing, and the people I saw from GOOGLE at DES felt the same way. That was a very well explained post. That is definitely one I think we all could agree on.