If you look, there is already a suggestions thread. Pined to the top.
Also, Jun is a machine. Robots don't have DNA to pass on. Not to say that we can't buy an unfertilized human egg and install an incubation chamber into the stomach. They would then need a hole bunch of other mods to keep it going.
I don't really see Jun being ok playing with someone else's junk. They already get jealous with Anon being around other Females. I guess if Anon is into it they might go for the Glory Hole but restrict cretin things and keep it reserve for Anon.