You should make this into a gist, tag it with .user.js, so people can simply click/install, as opposed to creating a new script, pasting in code, etc.

So the Flag Tracker is extremely useful, but would it be possible to make a userscript that can add an icon/something near the bottom of a post to untrack a post? There are sometimes times where I make a mistake, and it would be useful to have an easy way to untrack a post.

"anonymous edits reviews are preloaded so we can detect whether they have spam rejection reasons"...so what if they don't? What can we do?

This is a great tool! Helps notify if posts need to be reflagged for deletion, if they were prematurely edited out of the queue.