For example, this suggested audit changes the algorithm, and I don't know if the change is valid or not without carefully analysing the algorithm.
I think the original author should decide this. "Accept" can introduce potentially harmful edit, "Reject" can hide easy option (just clicking "Accept") of fixing the post from author's arsenal, requiring more effort to edit the post and therefore reducing probability that it will be fixed.
I see 4 buttons: "Approve", "Reject", "Imrove" and "Skip". A "stong" approve or reject can be carried out by editing the question again after the review outcome. But there's seems to be no "stong" skip (i.e. make it skip for everybody except of the author)...