[sciurius]

For the annotations: Yes.

For the refresh: There is a setting "Use text fields during song creation". When this setting is on, I'd say that updating metadata when refreshing a file is also desired. I see no use for filling metadata on first import only. If you have files with metadata I assume you want to use it. But unfortunately this would be a change in behaviour that may surprise some users so an additional setting would be wise.

Or a dialog during the refresh similar to: "Song file has changed, update metadata from file? Song key has changed, reset transpose?" For my workflow the answers would always be Yes and Yes but others may think different.