This is awesome! Thank you for this.
Here is my contribution:
1. Better VST compatibility (example: Antares Auto-Tune series).
2. More cleaner and simplified GUI. (example: less layers, lines, colors - better color scheme)
3. Simplicity continued: More streamlined software design.
4. Better hardware compatibility.
5. BUGS!!! There are so many still that distract you and hinder your workflow.
I think that should get some special attention aside from new features etc.