A couple of hours ago I reviewed a proposal to edit a post. The suggested edit was nasty, irrelevant and of pornographic nature. I rejected the edit choosing the reason for rejection as "harmful". I added a comment saying I recommend the user who suggested the edit be expelled. Will this get escalated and such an action be taken on that user?
As it stands, having merely rejected the edit and given a custom reason won't draw the moderator's attention. For that, the appropriate course of action would be to flag the post to which the edit was suggested for moderator attention, and explain the problem and ideally provide a link to the suggested edit (which you can find under the "activity" tab of your profile under "all actions" under "reviews").