Dharma transmission in the West has become a kind of credential, no different than an academic degree which results in a Ph.D. In an academic program, you associate yourself with like minded instructors, you map out a course of study which is approved by a single advisor, and those who have already earned the credential approve of your work. Your hard earned Ph.D. degree will not stop you from writing rubbish or misbehaving.
The mythical and mystical ramifications of my dharma heritage seem to be widely unheard of in my neighborhood, and have not done much to build my sangha. I have found that people will practice with me only if I offer useful trainings, trainings that help them work on the suffering in their lives.
Some Zen Dharma heirs and Zen teachers are charismatic and sincere, some Zen Dharma teachers are not very charming and sincere, and some Dharma heirs are charismatic and sociopathic. But I have seen the charismatic sociopath operate with and without Dharma transmission. I am not sure what it is that attracts people and binds them to these charlatans, but eliminating the current credentialling by turning away from Dharma transmission from experienced teachers does not seem like the solution.
I think that the solution to clergy misconduct in the Zen community lies in peer review, educating the sangha/congregation, insisting that Zen communities have ethical standards that offer protections to communities, promoting clergy misconduct laws in every state will go a long way to offering protections.