Curious as to bipedal proportions, especially, as there seems to be good stylized, even with larger than life heads, eyes, yet they look "good". Is there a chart like there is for proper anatomy for drawing? It'd be great to see a comparison even though I realize there are many forms of stylized. I think that'd make a great article.
Your link to the Substance file on polycount is broken, the correct link is: http://polycount.com/discussion/comment/2294007/#Comment_2294007
Juraj Talcik made a small tutorial, that should be really useful to 3dsMax users. Often in the Quixel Facebook Group, you can see questions on how to best utilize Atlas type textures from Megascans. The most common answer is to map them on plane, cut into parts and then scatter.
But what to do if you already have a model, a tree with million mapped leaves? Than you can quickly use Slate float controllers to copy atlas crop position and size across as many material IDs as you want. It’s much faster and flexible that cutting the texture itself. The tutorial is available as a huge image, which you can find below.
Jurai is a very talented artist, who’s doing a lot of digital art and interior design. His arch-viz projects are really cool. Check them out when you have the time.