luceos Use flagrow/byobu assign only yourself as recipient. Once done remove yourself as recipient and your discussion is active ? It's not really quick, but it works.
I've not seen a draft extension yet so the above might be my way of accomplishing what you need.
Well, I see notepad as something that is near and around to look at while writing an answer and note keeper that is quick to make without any effort. Available to access at any time in a single click.
However, your suggested extension is really well done. But still not what it has to be essentially.
