This is sort of a continuation of Timing in the Edit-Suggestion/Improve cycle. That was a Request-for-Clarification (which is still open, I might add) about how the Edit/Improve feature counts towards making a post CW. To save on your clicks, the basic issue is that if someone makes an edit suggestion which is then improved upon, then that counts for edits by two extra people in the count towards making a post CW. (At least, no-one has told me that it doesn't do that on the post mentioned above.)
We now have the new "de-CW" feature, but I feel that this doesn't address that issue, though it can mitigate the harmful effects of it. Being able to retroactively de-CW such a question helps a little, but doesn't actually solve this issue. Someone has to keep track of whether or not the question has been made CW - and the only one with the incentive to do so is the questioner who is probably not a very experienced SE user (since they asked a question that needed lots of editing!) - and it has to be flagged, and then a moderator has to take action. Moreover, that action goes beyond simply reversing the CW effect but also protects it from further CW-ification.
What I would like to see here is that when the "Improve" button is hit then only one edit counts towards the CW count. So that's my feature request.