Hi Joe A,
I often have users try to add existing content to a page by clicking on the "Edit This Page" link. Would it be possible list existing content by feature type on this page and allow users to add it to a page from there? If the content is like the blog or forum where it can't be added to multiple pages, it would need to be filtered out from this listing. I think this will make adding existing content to a page much easier than the current method of using the Content Manager.