I wonder if the lightbox you want to receive improvements, have some troublesome with the current scheme:
Add more than 28 pictures
by having too many images in the list the upload box goes off the screen, and also the thumbs in preview mode will not fit on the screen and try to roll the bar he leaves the lightbox.
Not being able to upload multiple photos at once
Not being able to customize the layout
The main image disappears at lower resolutions