I think that the issue is more of people not bothering to do the little things that make a face more realistic (...topics which have been covered numerous times in the past):

1. Make the face ever so slightly non-symettrical: whether by expression or morphs adjustments, ensure that the right half and left half are not the exact same.

2. Focus the eyes on something... that blank, vacant stare is a dead give-away of not doing a portrait of a 'person', just a render of a 3d dollie.

Just these two things will help turn even the most common or recognizable face shape morph into something 'real'.

 

 

 

RosemaryR
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"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."