We wish to create a hierarchy of pages by default for each of our clients. One of those pages documents the details of a client's hosted environment. A client may have multiple environments (DEV/TEST/PROD) in which case we would need to create pages for each additional environment. Because the template for this page is managed within a page tree blueprint, we cannot create a new instance of that page. If we instead define the page template outside of the page tree blueprint, we then cannot include it within the page tree blueprint.