This question relates to the process of importing images from a memory card or camera.
Would it be possible to have darktable recognise images which have previously been imported and to not bother with drawing thumbnails for those files until AFTER it's generated the thumbnails for new (not-previously-imported) images.
If this is achievable, perhaps it could be a core option along the lines of:
"When importing from memory card/camera, draw thumbnails:
- for all images, in chronological order
- for all images, but new images first
- only for new images"