"Celibate hierarchs" as you call them are not an elite, they are flesh and blood just like you and I. They undergo the same inclinations towards evil as the rest of us and many, if not most resist those inclinations or if they fall, they repent and start again. They don't expect the Moral Law, the Law of God infallibly revealed in Scripture and Tradition to be changed in order to accommodate them.
The Commandment to love the Lord with all thy heart, etc and thy neighbour as thyself places love of God a priority and we love God only by keeping His Commandments, as summarised in the Decalogue: Christ came to fulfil the Law not abolish it.
If one's conscience is the supreme arbiter between right and wrong, good and evil then we have no need of the Natural Law or the Divine Law.