Sony needs a pro body. That was one of my complaints with the A7RII - IMHO. It just felt, well, fragile. Hopefully the A7RIII or A9R (whatever they'll name it) is a more robust camera. Needs dual SD slots too.
Needs a QXD and an SD slot IMO, alot af data to shift if they make them faster bodies (one complaint I do have with the 5Dmk4 is the 21 shot RAW buffer, could have been so much better with CFast).