This is just a suggestion. Do you think users would benefit from having all privacy sensitive options in one place (e.g. https://addons.mozilla.org/en-US/firefox/addon/tinfoil/)?
This is not the best place for this, nor is this a complete bug (what would it look like? what would go on it?), so I'm going to close this as invalid. It would be best to write to firefox-dev: https://wiki.mozilla.org/Firefox/firefox-dev with a more complete list of what "about:privacy" would look like, and why we need to have it, and how it fits with existing privacy efforts like Polaris ( https://wiki.mozilla.org/Polaris )