Very simple idea, while dragging audio clips on the timeline, continually show the waveform rather than showing a blank box.  This functionality is present in Audition, and is incredibly useful for manual synchronization.  See attached gif for further explanation of what I mean by the "blank box".
I'm aware you can sort of already achieve this by "nudging" the audio clip, but it would be great if this were always available when dragging.  Thanks!