That's what I thought about the D3, and still do but there can be no denying progress, especially from a first product.
Much as Arthur sees the D850 as a target once it's become superseded by the next 'must have' I am looking for something, not *better* but more suitable, for astro and fine work, which good as it is, the D3 isn't really suited with it's relatively lego block size pixels. I used the D1 for three years (for those who may not know, the D1 was about 2.6Mp), so the 12Mp D3 is very high resolution by comparison!
I find it hard to imagine what a D810 will be like to work with but I hope to find out...