Something I'd find really handy would be to be able to embed variables/functions/whatever in the content as entered via the TinyMCE editor - i.e., treat this user-edited content as if it were an SS template. So, for example, the maintainer of the site could write whatever they like on the page but if they wanted a table of students in their page, they could simply type in $StudentTable and this would be correctly parsed as templates are.
Is this completely far-fetched?