Right now Digg is just adding to the information overload. I think we're all pretty exhausted with information. I'll see something pop up on twitter, I'll see it here as well, or on my RSS reader from another site. We're all talking about similar things. We need a global sort of decentralized "permalink" concept. Digg has the resources to do this. They can "digg" the web, instead of me digging stories. They'll find out what's hot via continuing user submissions, observing the twittersphere, popular blogs, etc... and then report to me a summary of everything regarding, for example, OpenSolaris being canned.
Yet another chaotic "stream of conciousness" comment from me... but I'm just getting the discussion going.
EDIT: this could work for everything... I obviously care mostly about tech and shy away from politics, but it would be cool to have all topics of a particular issue, with their weight on the political spectrum. Just another example.