We ARE the Church! The deep doctrinal reexam requires a searching together as sensus laicorum, theologians & hierarchical teaching office for the sensus fidelium. All are presumed to engage in this reexam. 

Perhaps you misconceive "the Church," overidentifying it with the hierarchy? That would explain your confusion. At the same time, anyone with the slightest acquaintance of the concrete lived experiences of the faithful, sociologically, and current moral methodologies of the theologians, anthropologically, would justifiably anticipate changes, magisterially, as the teaching office passes on what it has learned!

For some moral realities, different opinions, variously probable, could well coexist within the Church. So, there would be no justification for imagining that all disagreements are necessarily rooted in invincible ignorance, poor formation or sinful refusals. They are often just a reflection of human finitude, which does the best it can as it remains epistemically fallible.