Song view should work like Ableton Live's session view
Today's song view is a bit of waste of real estate. Every track gets a whole row, and there's not much utility in that. Yes, you do see the track length which is nice, but the price of that is, after 8 rows, you're out of space and need to start scrolling.
A better implementation would be like Ableton Live's Session view, where each column represents a track and each row a scene. Each pad would then represent an entire track. Then there could be no need for confusing colors to designate which track belongs to which session. Rather, the "Audition" buttons would be used to launch an entire row