Will the things that were included in the training eventually be added to the play section? Also with the sex change lab, after you get a penis could you make it so that you can use said penis
Yup, basically everything that's in training should eventually end up as a play item in some form; it's just a matter of time to write stuff, giving a variety of stuff in updates, and priorities picked by patron polls.
Once you get a penis in the sex change lab, you should be able to use it in scenes. If you've come across a place where the game doesn't seem to realize you have one, let me know! That's a bug.