> Webpages dying is probably one of the biggest design flaws of the original web.
Let me introduce you to the alternatives: print media, film, stone engravings. That stuff tends to get burned and shattered and it takes FOREVER to make copies.
I'm being cheeky but I don't know what design change you could possible make to the web to make webpages not die.
Ban JavaScript from making requests. Then save-as will work again.