My number one desire for improving comments is not on your list.

I would very much like to see the ability to edit a comment within a short amount of time, say within 10 minutes.

And I really want it to be in core WordPress as I would like it to be on *other* people’s sites where I might comment, because I have an incredibly great ability to recognize my own typos, but only immediately after I click the “Publish Comment” button. 🙁