I think the 16-inch MacBook Pro is fantastic in every way, with two exceptions.
The first exception is the webcam: it is rubbish. It’s criminal that Apple hasn’t updated the webcam in the MacBook range since 2012. I’m resigned to this never improving, it’s a hardware issue after all and Apple seems to have no interest in upgrading their webcams, even on the Pro_est_ of Pro MacBooks. (Note: Reincubate looks like it might be a way to improve things.)
The second exception was software related. Until recently, when I closed the MacBook lid and put it on the charger, it went to sleep (as it should). Then, after a little while, the MacBook Pro shut down. When restarted, macOS presented the Your Mac was shut down due to a problem dialog.
The fix was to disable Power Nap when on the charger.