Welcome back!
I don't have anything specific wright now as features that I'm missing, and the list as is pretty much sums it all up.
- If I had to pick one from the list, it is multiple camera support, I have a D800 mono and D810A, would love to use them both at the same time.
/Yves
Donghun, if you find a solution to AF D810A issue, let me know, I'm in the same boat ...