I second this feature request. Jotting down why a link has been bookmarked will be extremely helpful—I do so each and every time, with much resistance!—as is writing an inpromptu summary, all possible in DT3 but not yet with DTTG, where most (of my) clipping takes place.
The share sheet field would correspond with the existing Comments field, just accessible while clipping.
Screenshots
Fig 1. Space for comments
Fig. 2. Comments field in Info