As in the title - please, enable saving drafts of questions and drafts of answers, and returning to them on my next visit to MO.
I am very slow in putting my thoughts into print. I Leave them for some time, return or delete them later. In most cases I don't like what I wrote. Now - I have to manage my drafts with an external editor. It would be more convenient to have such a feature available within the MO.
Edit: As Andrew explains it in the comments - the feature I wanted is already present: the system automatically saves my draft once in a while. I get the draft back when I log in and return to the same question. Now I see no need for any change, thanks.