I think there are also "form saver" browser extensions that can back up form data automatically for you in case of a failed submission/browser crash.
HN is old-school and the UI doesn't seem to a big priority. I wouldn't count on it changing much... people here like it that way.
But HN has no "Unlimited Comments" plan, to upsell you to. Nor ads, that they want you to view more of. Nor feature-rich software, that they want you to buy.