approximation to reality is indispensable for success in simulation games such as are those that lead you to total immersion, as is the case with the Virtual Reality.
But even within various depths of realism there, so you have to ensure at least the minimum.
Then comes the artificial intelligence (AI), which is the other ingredient that completes the circle.
But much remains to be done, we have no sand, or dunes, or similar color, we have no vegetation, no rain, (snow) no water in the rivers where they see a fishing boat, or multiple forms of clouds, waterfalls and lightning, of variablesni times seasons, and the earth as seen from space and that is what you will grow in value to outerra.
The other thing we know how to do, and come to look, we just have to wait.
that's my opinion.