There's a tool that does 3D presentations called Tao Presentations, just around the corner. See http://www.taodyne.com. It also does "real" 3D (i.e. stereoscopy or auto-stereoscopy on Philips or Alioscopy screens).

The description of slides looks close to what you are calling for:

slide "test",

    * "First point"

    * "Second point"

It doesn't output to Impress.js yet, but that sounds like an interesting opportunity.