Feature Request for Wiki - Protected Content

Maybe this can already be done. It would be great to be able to protect some content in the Wiki's and allow the rest to be edited. For example, we are wanting to use it to collaborate on teaching ideas for certain lessons. So we could set up the general lesson plan template using the headings and then only allow editing to be done under those headings. It would even be powerful to ensure the really good additions get protected.

Using shortcodes would be the easiest, that's why I am assumming there is probably a way already. Ideally, I would disable the advanced editing option and when they click on edit, the uneditable content is highlighted or something and can not be touched.

Any way to do this already?