I would like to see better use of instant messaging. It would be great if you can IM applications to determine the health of the application, the status, version, etc. If your on the application's buddy list, you can query the server application from anywhere, not just the console.
In regards to health, I've been toying with the idea of having stack traces optionally send to my through IM. This way if a customer calls and has a problem, I can see the stack traces happen through IM in real time. This would allow me to easily see the problem, fix it and release a patch.
IM has so many fantastic uses that if people sat down and thought about it they can easily come up with a dozen or so innovative ideas.