it would be nice,, if say,, Nikon offered every Nikon 600 user a coupon replacement of say 1000 dollars for a one for one trade,, I once had a bad Canon Powershop, that I sent in for repair, and they called me back, and said,, well for a 100 dollars they would switch me to the newer version,, which I did, and was totally happy,,
Nikon would so thrill every 600 user if they did that,, and then heck,, they can offer a resell of the 600 or scrap
but,, the cameras stores would not be happy,, they would perceive loss sales, but I think it would help the brand, and frankly
those poor 600 customers will be forced to hold onto their cameras since I am sure the 600 price will drop like a lead weight.
on the other hand, if you are not afraid of some tissue and cleaning fluid,, might be a great time to pick up a cheap 600 in say a year.