It's always a trade off between quality and computer power. And you can only get so detailed if you want to have the proc gen running on a normal PC.LOL! I wonder what's happened to
Not sure I see how that follows?
An improved procedural engine, creating more diversity and less repeated tiles could surely also create superior outcomes? All depends on the quality of the rules used?
So hand crafted tiles can be used to "modify" proc gen terrain to give it more detail without requiring more power.
The trick is: Can you make enough prefabs and transform them right so nobody realizes the sleight of hand?