That sounds like an approach prone to backfiring if not done carefully. The real world is noisy - something too perfect would stand out like a sore thumb. Training on an overly large set would likely wind up inconsistent and overly small one would probably be too biased.

For instance one fundamental of forensic accounting is Benford's law [1]. Even in peripherally related with artistry it stands out. one of my never off the ground webcomic attempts with digital art I tried making backgrounds with perspective and I calculated the pixel spacing completely evenly - it stood out as unnaturally regular compared to doing it with just a straight-edge and a ruler on a cheap Wacom tablet.

[1]: https://en.wikipedia.org/wiki/Benford%27s_law