1) Yup, happening.
2) Yup, happening.
3) Nope, sorry. I've been writing for film and putting up with the staff view for years. They even
removed features from it between 8.5 and the X series. Today's announcements further emphasize to me that staff view simply isn't a priority, as it hasn't been in the past. No mention of it in the roadmap at all.
We can keep beating that drum but I just don't think it's in the cards, unfortunately. When a company decides to fiddle with color themes and add touch support to a DAW instead of improving a long-neglected feature that some of us rely on, it's obvious. We are not their target audience.
So I guess I'll go ahead and beat this dead horse again: I, for one, am not asking for staff view to be Finale or Sibelius or anything close to them. The staff view workflow has a good foundation as it is. It needs polish and workflow enhancements geared toward producing recordings, not sheet music. Cubase is probably the closest to this, but it felt too restrictive by comparison (despite its plethora of markings and sheet-music fluff). In addition, the fact that Sonar's staff view is integrated into the DAW itself is a major boon and trumps, for me, the workflow of writing in one app and importing into Sonar.
I haven't tried any of the offerings on Mac. They may be better and my answer lies there... but one thing I do know is that the answer does not lie in Sonar.