What I would like to see is someone who can manage to make an SSH client, as a secondary screen off of the Multiplayer Menu perhaps. I believe, for best effect, it should force the "small" Minecraft font, though that's not a requirement. It would grab the IP Address / Hostname from a selected server (in the case of from the server select screen) or from the IP / Hostname input (in the case of Direct Connect).
The only reason why I ask is to be able to administrate a server where you have SSH access to without having to open a separate client - for instance, if a server is shut down, but the box is still on and you have SSH access, you could fire it up without having to open an external client like PuTTY.
Probably the hardest part of all of this is creating a new screen to manage all of this, but the rest should be easy.