Based on this video, it might be a nice new show feature to set up a glow-painted wall and paint it using a laser from a blu-ray burner (high-power). The effect is totally different from loop-scanning, as the image slowly fades out, so wouldn't need to be re-painted at as fast a rate. Rather complex graphics could be painted due to this, even pages of text.
What do you think, is it feasible?