Would love to see where you take a live specimen (one request) of each type to the Doc on U so he can figure out how they work. Since he's mr chimera he might see a way to make them into one critter/TF that gives a current tail both a cock and vagina.... but instead of eggs owner can really impreg or get preg this way... MY isn't your tail really really fat? or maybe the egg would be a chimera of steele and the combo tail... a new race?
Steele being a mother/father to a new race would be intriguing. Think micro-steeles with tails for sex only (and an anus but moved to tail vs thorax/body norm loc?) They would make great pets you can fuck ala certain predator that came with ice cream girl (sorry not braining names right now)