Would be really nice, like really, really, reallyyyyyy nice. Instead of dead ends you can have something feed into a game over page that seamlessly leads back. Better yet it means if you want to have a story where you have an option of doing different things you can allow the player to do all of them without needing to go back to where the choices were first presented.
You mean the "start over" link at the bottom of every page? You mean the linking threads system we've had from the site's beginning?