When adding Pictures via bulk upload from the Albums page it would be nice to be able to populate the Caption field with the data from the Image Title field (which is the image file name minus the file extension).
I notice when uploading large numbers of images using bulk upload that the 'add caption' routine has a problem - it gets slower and slower to save. I uploaded 50 images this way and found that after the first 10 or so that saving was taking over a minute.