This is in the issue tracker, but I feel like more people would mention it. My guess is most don't know yet, until they try it. The issue: you can do amazing subdivision of your work, but you CAN'T export it! We're in a modern age where other programs can handle that amount of polygons, so please let us have that on export. Modern games, and of course cinematic projects, demand those smoother edges.
Vote.
https://www.reallusion.com/FeedBackTracker/Issue/Exporting-characters-with-subdivision

Dave Corwin Polcino
Reallusion Web Series: ADULT ANIMATION SERIES
Company: Noise and Vision