In other words should priests be held legally accountable for breaching the confidentiality between themselves and members of their parish?
Well, what is discussed by the priest and parishioner is already privileged, so it can't be used in court, and a priest who violates the seal of the confessional will likely be defrocked, so I'm not sure what more you think needs to be done. Sanctions for revealing privileged information (such as between doctor/patient, attorney/client, or clergyman/parishioner) are a civil matter, not a criminal one.