1. Unless you try out and begin using Duckbar, and I don't even know if it has what you are looking for, the Save icon is not likely to come back in Sonar, ever.
2. CTRL+S , like CTRL+Z, CTRL+C, and CTRL+V, are really not much of a stretch to get used to. They are BASIC Windows convention key combinations.
Your left pinky will find the CTRL key without even having to look down, and it is a minimal glance to pick either S, Z, C, or V for doing Save, Undo, Copy, or Paste. Your other choices are to use mouse clicks.
3. Bottom line: use them, or don't. That's the set of choices. Your combined keystrokes thus far in this thread could have been used to save likely over 100 projects.
I am not at all trying to be antagonistic here - there is simply LITTLE chance that they would consider losing any real estate for bringing back what are really considered trivial key combinations to accomplish basic functions in Windows, following Windows conventions.
I wish you the best with the product, and in life, so keep on plugging away at both, and I think you will find success. :)
Bob Bone