I would love to get an option to let LR automatically delete images from the card after they have been successfully imported. Images on the card that have not been imported, are let alone, of course.
It would serve two purposes for me: 1. It would save me deleting the images manually. 2. It would dramatically improve the experience of importing images from one card into different catalogs.
An incremental import of subsets of images on one card into a single catalog (but e.g., different folders) is well supported by the "New Photos" filter in the import dialog. However, when I switch catalogs while downloading images from a card -- because some subset of images on the card needs to go into a different catalog -- the "New Photos" filter no longer works. As a result, I have to remember and wade through a lot of images I already imported into a different catalog.
I realise that deleting images from the card is a sensitive issue. It must not happen prior to having verified that the image indeed has been copied (or converted) to a new location. Picasa supports this double checking.
As a safety net, Lightroom could offer a "restore deleted images" feature that would resurrect deleted files from cards. Users will find such a feature tremendously useful for other occasions as well.
I'd be happy with the following compromises as well:
* The option to delete images after import is available only if one activates a second backup location.
* Images are not deleted but the tracking of which images have already been imported is extended to work across catalogs. A record of what images still need to be imported could be associated with a currently inserted card.