How about the ability to delete or edit a pending review or review edit?

The same problem exists in these help forums, except that, you can edit anything you post, as long as someone does not make a direct reply to it. Any way we can change that too? So that we can edit after someone has replied? I understand why the edit button should vanish after a reply is made, but maybe it could be left for about 10 minutes in case we need to correct something... In my case, typos always kill me. I just made a detailed response to a thread I'm involved in, I was able to fix most of my blunders, and then someone replied and my final fix would not post. At least the ability to post an edit after someone replies, if we started that edit BEFORE the reply was made, that way, I don't feel like 10 minutes worth of editing is not in vain... 

I have added a similar Idea post here, and linked to your post:

Add the ability for contributors to cancel their pending contributions