I'm new to this forum, so excuse me if this has been mentioned before (I actually would be surprised if it hasn't).
 
All other DAWs I work with have a - more or less - sophisticated feature for cleaning up the project, i.e. getting rid of unused files, renaming files, etc. - Sonar apparently has nothing like that. This would be one of my two most urgent feature requests for the next versions: PLEASE include a file/clip manager!
 
The other request would be that bus tracks be repositionable such that they appear close to the audio tracks they belong to.

Does nobody else want bus tracks to be freely positionable?
 
I totally depend on that (that's one of the reasons why I cannot do any important mixes in Sonar yet - it simply slows me down too much).
 
As an example, consider a project with the following drum tracks:
 
1.) Kick in
2.) Kick out
3.) Kick sub
4.) Snare top
5.) Snare bottom
6.) Hi-Hat
7.) Ride
8.) Tom 1
9.) Tom 2
10.) Tom 3
11.) OH L
12.) OH R
13.) Room L
14.) Room R
15.) Mono Room
 
A typical routing would look like this:
 
16.) 1, 2, 3 -> Kick Bus
17.) 4, 4 -> Snare Bus
18.) 8, 9,10 -> Toms Bus
19.) 11, 12 -> Overheads Bus
20.) 13, 14 -> Stereo Room Bus
21.) Drums Parallel Bus
22.) 6, 7, 15, 16, 17, 18, 19, 20, 21 -> Drums Bus
 
In Sonar I have to hop between tracks and busses A LOT, which extremely slows down the workflow (and hence the mix quality). In other DAWs I can place the bus tracks right beside the audio tracks they belong to and work on the drum mix without any interruptions.