I usually print at 300 dpi Exquisite detail is extremely important to me. For the D800E to get to exactly 300 dpi, I would need to print at 62,3 cm x 41,6 cm. Thus, my usual print size is 60 x 40 cm, allowing for a little room to crop. For the D850, to get to exactly 300 dpi, I would need to print at 69,9 cm x 46,6 cm. As Shun suggested, the resolution advantage is not that significant in actual use.
Higher frame rate, better autofocus, backlit buttons, a one-stop advantage, less battery consumption, a bigger viewfinder, and a higher resolution monitor are the other main selling points to me, also in nice-to-have territory. I cannot say I am limited in any way by the D800E. AF works generally very well with the D800E after the adjustment for the left focus issues. This serves as a reminder for me to wait with a possible purchase until possible kinks are corrected.