I've been redesigning my site and I plan to use XenForo as my new forum software, however, I'll be using XenForo as the entire site. I plan to modify the main page to be my home page for the site, and to create a custom page to list the forums as it would on the normal main forum page. However, XenForo syntax isn't allowed in the custom pages. I think adding XenForo syntax to custom pages would definitely allow for more creativity and freedom with XenForo, adding functionality to custom pages, rather than them just being stale pages. Which would also encourage the use of XenForo as a CMS/Forum integration as a whole.