Overall looks good, I think youc ould play a little bit more with the sky, maybe some HDR effects? Also the sunlight doesnt seem bright enough for some reason.
The streets texture look so noisy and low res, that I would change too.
I like the buildings, can we have more buildings on the background? or maybe even add a skyline matte plane showing some broken buildings...
Compositionally this image is quite strange. There is nothing in the foreground, the focal point is a building way off in the distance that splits the whole image in two so it almost looks symmetrical. I would move the camera forward by 6 foot and to the left by 10 foot so that you are looking down the road to the right of the tall building. Game environments should lead a player through them and show the player where they have to go.
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The streets texture look so noisy and low res, that I would change too.
I like the buildings, can we have more buildings on the background? or maybe even add a skyline matte plane showing some broken buildings...
One thing which comes to my mind is that everything looks really flat (normal map? spec maps?)