Hi, Dear DarkAgent.! I downloaded all Illustrious checkpoint models, absolutely all Illustrious models available on Civitai, and tested them all in two categories: 1. Realism 2. Anatomical accuracy of the male physique. Why male and not female?
Because all the datasets are already chock-full of female tags, so much so that they turn any man into a woman, even if you don't want it to be.:)

Therefore, if a checkpoint handles the male body well, it means the author really worked on their model and didn't just do it haphazardly.
I've posed male characters in various poses.
I know specific NSFW poses where 90% of the checkpoints break and fail to support male anatomy. This is due to the fact that Danbooru has virtually no references for specific poses for male anatomy.
And your model is exactly that – you managed to implement male anatomy without female legs or pelvis. Your model emerged victorious from all the other Illustrious models.!
Of course, it didn't handle all the poses, but in any case, your model simply couldn't create male genitalia in a difficult situation "understanding" that male genitalia were needed, but it just didn't "know" how to do it in this pose.
Excellent work.!
However, there is one complex detail that requires improvement – ​​managing the character's age using tags. This is still a complex matter. Otherwise, I'm 100% certain that the second or third version of your Illustrious model will be the best on Civitai within six months.
It's just that not everyone yet knows what a great foundation you've laid for its future development.!

Amazing work!!! Best prompting to image for the style I like to create.