For my favorite DAW I would like:
1 - Fix the possibility of crossfading over non-overlapping clips
2 - Console meter - see in the console the implication of the effects of Compression and Limiter at the level of the meters (Like Protools or Studio One)
3 - Be able to change the tempo with the mouse wheel
4 - The recording count keep it in memory for all projects
5 - Fix bug to fold multiple tracks
6 - Recording activates monitoring (in option)
7 - Track tempo, have it rather in the rule for better visibility
8 - Correct the action delete an automation line (it does not work, it remains active)
9 - Hear the change of velocity (on the velocity lines in PRV, in Step Sequencer and wherever it is possible to change the velocity of a note
10 - Review the Drum Panel and have a Drum Grid (like Cubase) and disconnect it from PRV
11 - Review some interface. The GUI is modern now and there are still relics of the old versions of Sonar (I started with Sonar 2 XL ;-))
12 - Can easily dissociate a mono audio track from a stereo audio track
13 - For stereo audio tracks have two panners for each channel like Protools
14 - Midi to Audio by simply drag drop (like Protools)
15 - Be able to draw midi notes with different velocities (like protools)
16 - Fix the display of the name of the VST plugins without having to go through "VSTPlugInNameFormat"
17 - Can change the default velocity in PRV
18 - Chord track like Cubase
19 - Tracks, Groups and Clips (Sidebars) like Protools
20 - lets you choose and bugs ;-)