OK, I know that the answer will probably come with the theme SDK, but..
I don't use media much and would love to have the panels be assignable, and increase/decrease - able.
All would be required
you could then create a panel for any folder that you have created (like media)
Frequent would be optional
Favorites would be there
Downloads could also be optional
Frequent - Optional
Any other thoughts for theme builders to stew over while waiting for the theme SDK/Builder?