Offer a print delay (proof delay) for larger sizes
I would like to see a printing delay for sizes larger than say, 8x10. Of course the size would be of my choosing, but I wouldn't want to touch up 4x6's. I would be very interested in touching up a 30x40. I know I can do this now by delaying my entire order, but it could be automated if the order was all 4x6s and 5x7s.