An extension of your second point fls13.

Super mega hyper realistic textures that are simply hi-res photos pasted onto UV maps - ignoring the material room and all it's node treasures.

It's like painting human features onto a plastic doll. It wouldn't matter how great an artist you are, it will never look 'real'.

If we can hit that bullseye, the rest of the dominos will fall like a house of cards...checkmate!