What you say makes sense and somehow no one raised this issue with me. Let me see what I can do about it. Presently looking into this. My thinking is we can provide an option to the user to specify the portfolio page and then have this page displayed in the breadcrumb. Also, the user will also have an option to insert a button or link in the portfolio item page that links back to this portfolio page. Will get back to you with a temporary solution to this until we integrate it into the framework.