Souls falling into mortal sin could never be the "least" of our problems, especially for the priests and bishops who are entrusted to be shepherds of souls.
If a person wishes to seek God, they are warmly invited to make a good Confession --- this is the Sacrament for them --- repenting of their sins, and intending not to commit them anymore, so that they may then receive Communion worthily with us, their fellow repentant sinners.
“Souls falling into mortal sin could never be the “least” of our problems, especially for the priests and bishops who are entrusted to be shepherds of souls.”
More dangerous the priests, bishops and cardinals that are leading your denomination astray from the top down. Abused your children, protected the abusers, hide away gays in leadership, promote destructive doctrines and policies, etc.
Those who love and seek God are never the problem.
Nor did Christ condemn them. He did have quite a few words for leaders - whitewashed tombs with bones inside - that lead followers astray.