Since  the Church doesn’t want to perform funerals for “manifest sinners”  they need to correctly identify ALL  of  those who are unworthy.  In order to insure that the laity is not “scandalized” they should seek out any  parishioners who knew the deceased for their opinion.  “Does anyone have an objection to providing a Catholic funeral for the departed?”.  If enough people come forth with negative reviews of the person’s life........“no funeral for you!”  

“Eternal suffering awaits anyone who questions God's infinite love"

Bill Hicks