It seems to me that in most cases when someone posts a really great piece to the gallery that there are the typical questions. Can we see wires? Can you explain how you made that texture? Can you tell us about the lighting set up? etc etc.
I think it'd be nice to include more fields that they could fill out when submitting their works, as optional things. Have a place for them to specify an additional photo that is a wireframe and have some fields set to questions that we all wanna know most of the time.