I have one quick suggestion: Allow Sonar's Paste function in Take Lanes to Paste in the Lane the cursor hovers over, the Lane that's selected, or a brand new Lane. I think there's still some odd things that can happen here as-is, namely that a Pasted clip in the same Lane splits the clip in the current Take Lane.
I'sd like to be able to Paste in the Lane the cursor hovers over (usually a blanks space) so I can then drag the Pasted clip anywhere I want without cutting up the clip where the newly Pasted clip appears.
More, it would be divine to select, "Paste Into New Lane", creating a brand new Lane for a Pasted clip.