I'd like an option for a different scrolling action during playback and recording, where the cursor stays in the centre of the display and the tracks scroll past. This would be great for playing along to the chord track - you'd watch the same spot instead of having to quickly refocus when the cursor reaches the end of the display and the whole screen shifts to the left.
I also play along (practising a part) while keeping an eye on other tracks' peaks. When the cursor hits the edge and jumps back, it's really annoying.
I don't know what this would do to CPU usage.