I would certainly love to have one for wildlife photography. I see a big advantage of the low weight compared to the 200-500mm f.5.6 and to the 500mm f.4. I am looking forward to see some tests, where the new lens is compared to the other 500mm options, including using converters. The 500 PF would most likely make a great combination together with the D500. The price, however, is probably reasonable, but still quite high.