Found out what it adds over the options available individually.
Headrest
Special Door Trim
Leather engine/trunk cover
Black Calipers
Black Gear Selector
Contrast stitching mats
Everything else appears to be available as individual options and most are standard features (HUD, LED Headlights, etc) in the brochures I've seen for markets other than the home German market. Adding everything up the Pure Impulse package exclusive items cost about 7000-8000€ if you spec the rest of the car to UK/US levels of standard features. We've got it good in the US.