[feature request:] fret diagrams with fingering indications and additional text

[pls]

Hey all,

currently it's possible to add fingering indications (any character) inside of 
dots or "below" the strings. (In my attachment in landscape orientation
it's rather to the right of the strings).  Now I would like to be able to not 
only use characters in dots but
also add additional text (any kind of character) at least to the right of the 
fret
diagram (in LilyPond-speak: "below the strings").  It would be nice to
also have the option to place the additional characters to the left of
the diagram (in LilyPond-speak: above the strings).  And here is an
example of how the result might look like:

fret-diagram-fingering-indications+additional-text.png
Description: fret diagrams with fingering indications and additional text

(The fancy curved line at the right side of the diagram is not so
important.  Category: "nice to have".)

And this is an example of how the future LilyPond syntax could look like:
<c g c' e' g'>1^\markup {
           \fret-diagram-verbose #'(
             (place-fret 6 3 1 red parenthesized default-paren-color "G (5th)")
             (place-fret 5 3 "bla" inverted "C (Root)")
             ...
           )
         }

Does this request make sense?  Is anybody else interested in this
feature?

Patrick