Some of these things won't be in 3.0 but they are things I'd like to see in DesktopX at some point:

• External development mode. That is, a way for me to turn on and off all of the DesktopX scripting in all objects so I can put things together with the objects "Dead" and flick a switch to see them live. Would be nice to have a Photoshop type interface for this that I coudl drag and drop common things to and from.
  
• .x support for 3D. Once Avalon comes, I want to be able to make 3D models and manipulate them in DesktopX.
  
• C# and other languages. Can't do this until Longhorn (.net libraries too big) but I want to be able to make widgets/gadgets/desktops in C# and XAML.
  
• I want to be able to take a script and export it as a plugin. So we're not copying and pasting JavaScript or VB Script code anymore. Instead we just configure a plugin. Since DesktopX 3 is going to support user created dialogs via Script, this should be closer to a reality.
  
• I want a much nicer object navigator.
  

This is by no means my entire list, but these are some of the "biggies" I have on the list.