Considering the number of people who continue to watch their show, it doesn't seem like they "need" to do anything.
Not that many people watch it. And those who have watched in the past, like me, have stopped because of the long length and the unprofessional speculation and gossip, mostly (all?) by Dave. If they want to expand their viewership--and why wouldn't they?--they need to put together a more professional and succinct product.