Peter,
> the addition of foot-tapping visuals beneath musical scores. [...] Thanks for the images, however, they don't convince me from a typographical point of view. Please remember that LilyPond is primarily a tool for typesetting music in high quality – your images are not of such a high quality, and it is difficult to me to decide whether this feature is something you've cooked up or whether there really exist scores with such foot-tapping visuals. If this is your personal ad-hoc notation, I fear there will be zero support from anyone to ever implement it. You would have to do this by your own. Otherwise please present *typeset*, high-quality scores that we can use to illustrate a new issue. Werner