Can my surgeon add a slight hump back to the bridge of my nose? (photos)

From the posted photo you appear to have a beautiful result. I would suggest that you don't do anything for at least a year from your surgery and see if you still feel the same way. I would also suggest you try some filler first before surgery to see if you truly like having a "hump" back.

From your photo, it does appear that you have a great surgical result, and over time, you might get more used to your new nose and how it fits your face. However, hyaluronic acid filler injections (like restylane, perlane, juvederm, etc) can be used to re-create a dorsal hump if you continue to be unhappy with your appearance. These fillers typically last for about a year, and can be done in the office without general anesthesia. Down the road, if you wanted a more permanent result, cartilage grafting to create a slight hump would be an option. All the best!