I agree HUD would not work, but the type of optics found in a virtual reality helmet (projecting an image of the essential instruments) attached to the smoke hood and flipped down when required would do the job?
The get out of jail card would be an option to see a view in the smoke hood from a uncooled low cost thermal camera on the aircraft nose, a handy camera to have in other emergency situations too, when just seeing an horizon would make a difference such as during a night emergency.
http://www.flir.com/uploadedfiles/Eu...AS_0013_EN.pdf
Mickjoebill