Nikon or any Japanese manufacturer does not take field recommendations, if they do not discover a problem it is not addressed. The only one that finally did was Toyota after their largest market regulators filed suit and levied major fines. Nikon is not going to change or any other similar company.
Are you saying that high performance cameras are for anyone? They are not but many buy them thinking that there is no difference between more general purpose cameras and think the camera will compensate, when actually just the opposite is true.
No one is trying to kill questions, but no one addressed my question of "why" when everyone knows whatever one's real or imagined problem is not going to change Nikon or any other company's policies in responding to field reports. Considering that every person who cleaned their camera a few times reported the dust greatly reduced, and that most higher end cameras have had initial oil reports it is just surprising that so much is being made of this suddenly with this model introduction. The reports have been around since the D1 when new models come out but users took it in stride and found it went away soon. The D3 for example is considered a classic, highly reliable, super performance but on release there were mentions of oil but few people got all worked up about such a common occurrence. Nikon did not change anything in production and the new cameras settled in rather quickly. Film cameras often had reports of oil for the first months of ownership. Knowing all that, it just comes are surprising how so many now, suddenly are calling this a defect and are exchanging cameras left and right before allowing things to settle down with any one of them. What again is the point of creating petitions? If the hours spent stewing over it had been replaced by minutes of cleaning a couple times, it would have been a moot point and quickly forgotten. Stan St Petersburg Russia