I've now changed the archive link at the bottom of the front page. It used to link to some feature that our original developers started but never came close to finishing.
So now that link goes to the regular diary page for the Front Page diary. It's not perfect, as when you click the link you'll get a duplicate of the stories on the front page currently, but it'll do for now. You can at least get to older stories from there by clicking the year and month as needed.