I just ran across a suggested edit that was rejected for being an "invalid edit" and a "radical change" because it appeared that the editor had attempted to add an
<input> tag in the question. In reality, the original poster had not properly included it with the code block, so it was not rendered (another problem in itself). There were 2 other reviewers who did take the time to look at it in markdown and see that the tag was there originally, however 3 did not and a perfectly valid edit was rejected. I have seen this happen other times as well.
I believe that it would be useful to include this type of edit in the review audit process. I understand that, largely, the goal of the audits is to prevent robo-reviewers, but it does seem like this, and other suggestions, would help increase the quality of the people who are actually reviewing.