Pastoral issues are serious. In my time in the RCC, I was blessed to have pastoral care that was probably better than most (being in small parishes with younger, less-jaded clergy probably helps), yet I still left. I'm not saying that more responsive pastoral care wouldn't address a lot of these issues, but I have noticed among the RCC this feeling that "if we let them have X, they'll stay" (e.g., "youth masses", inclusive language, etc.), which is a bit like putting a band-aid on a shark bite, in a lot of cases. Interviewing Catholics-turned-Baptists or gone completely inactive/secular/areligious probably steers the responses to certain territory that you would not find as relevant if you interviewed Catholics-turned-Orthodox, Catholics-turned-Muslim, Catholics-turned-Atheist, etc.