Improvements:
Even better NSFW
Even better human anatomy
More stable, at least for portraits
Better image quality
No more plastic look which often happened with long prompts
After days of concentrated effort and several setbacks, I finally noticed substantial improvements. I made an entirely new merge, merged it with v1.5, added loras, and stabilized it by merging it once again with v1.5.
This version would be labeled as v3.2 if I uploaded all the versions in between 😎