Your tool is poised to do something no other template device can do: Create a dynamic index page(s) at the beginning of the calendar file that point to "Pages that have annotations of any kind" - its my major heartburn with remarkable. large template in use (calendar etc) - notes everywhere, no easy way to get to them (sure, search can work, and everyone suggests I maintain my own main page noting where my notes are - WHO has time for that)
But it seems your tool could do something no other tool can - when you stitch together the calsync with my notes you could do one of two things:
- on the yearly and monthly cal view with all the days of the year/month, put a marker DOT next to the number, signifying this date "has user notes" - easy for me to see in one place WHERE i wrote something
- build an index page listing date that has notes..