If you want to develop a good sex toy, you can contact Tempest Max, he has a lot of good ideas, it would also be nice if the sex toy had the shape of a female lower body, I think that would be the next step, of course, the lower body would have to be interchangeable, so that it can be changed at will. And the stroker would need to be interchangeable to allow the user to quickly switch between oral, anal and vaginal use during use, much like an interchangeable revolver system