Thank you for the kind words~
There will only be sex scenes with intelligent humanoid monsters. But I guess a skeleton can count under that definition. I might make some funny sex scene for them one day, who knows.
Specific boss drops are possible, but time consuming to make. I might add some in certain cases.
To be honest, I do not know if the final version will be paid. Regardless, that is a very long way off, for now.