In the Audio Edit if the timeline was made a bit bigger and be able to edit the chords direct, you would need to give snap options of not just 1/4 but 1/8 and 1/16. Have the play cursor stay in the center and the audio waveform scroll smoothly like this https://www.dropbox.com/s/ygmv1abj171os7a/BB23-Audio-Edit-Scroll.mp4?dl=0

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Chord-Sheet-Audio-Edit.gif (186.04 KB, 44 downloads)
BB23-Chord-Edit-Audio-Edit.png (465.96 KB, 41 downloads)