Sometimes, after uploading a series of images, I enter slideshow view to navigate them with the arrows and remove a few. Right now this is really cumbersome because slideshow view doesn't allow deleting images. I have to close the view, return to the gallery, remove the picture there, and then reopen slideshow view. It's a big productivity killer. I would definitely need a "Delete" button in slideshow view and, ideally, the ability to delete with the Delete key.