Yeah in the use case I'm imagining, just a copy of the original photo(s) would be ideal for drag/drop. Maybe the right click > "export selected items" dialog could have more options, like to include images alongside metadata in an export folder, to choose between originals or modified images etc.
Really any way to easily get grouped images out of Tropy for use/re-use would be so awesome, and I think a lot of the people I work with (architecture & art historians, architects and other designers) would agree. People like us really need a straightforward tool for organizing and annotating image collections, but the images themselves need to be accessible once they're in there so that they can get recycled into PowerPoints, publications, etc.
Thanks for all your work!