• Layer support („always on top“) [high priority]
• Action system [high priority]
  You will be able to specify actions for things like button click (thus overriding default actions)
• Transparent windows [low priority]
  Configurable both compile time and runtime.
• RANDR support [low priority]
  The X Resize and Rotate Extension ( http://www.xfree86.org/~keithp/talks/randr/randr/ )
• Tabs embedded in title bar. [high priority]
  Instead of having them outside the window they will be inside the title bar, thus giving you even more desktop space.

Und noch eingies mehr… 😉