Estimates/Proposals - Image Attachement

In our experience, some times clients have selected finishes or items already selected, or have an idea but would like us as the estimators to provide a sample photo. In Joist, its possible to add photos to line items displaying finishes or particular products. It would be tremendously helpful if we could attach photos to the proposals or the estimates DIRECTLY on the line item rather than attaching the photos at the very bottom of the proposal. I noticed on certain catalog items, clicking into the detail shows an image of the item. If there was a selectable option to display the catalog photo on the proposal that would be great.