I find with the A7RIV’s improved EVF, I am pretty accurate focusing at portrait distances without magnification. It is much easier to focus MF glass on the new body. I turned off focus peaking and can often get focus nailed w/o even punching in to magnification.
The 50/1.2 is still pretty contrasty even wide open and relatively easy to focus compared to some other fast lenses. At f/2 it is sharp enough for me at close to MFD (improves more at f/2.8 and again at f/4, but f/2 is way better than f/1.2 or f/1.4). Not planning to upgrade or add the 50/2 APO at this point, even though it looks great.