Add to the existing posts here or if your request contains unique requests, create a new one:
 
http://forum.cakewalk.com/Features-Ideas-f76.aspx
 
Apparently this is the official feature / fix portal which is monitored by the Sonar product development deciders.

Staff View Fans.
Please go to this link. It is the Ideas and Features Forum.
http://forum.cakewalk.com/Features-Ideas-f76.aspx
You will find several threads regarding Staff View and MusicXML fixes.
In the first post in each of the threads, click on the stars shown on the right to vote for the idea.
You can only vote once so I suggest you click 5 stars.