that's what i was suggesting, with a high initial advance, you could set it up so the engine will start when hot under these conditions, and when it catches, restore advance. You could wire the step activation through an oil pressure switch or something..
Overall, I was trying to get people to think outside the box. (no pun intended)
That's what Dan was saying - the most common use of the retard function is exactly what you are suggesting. The factory would connect the white wire to the starter relay (fender solenoid), so when you cranked, the DS would retard, and once the engine caught, releasing the key would restore advance. This is what Dennis described he did on his application in an earlier post. Simple start retard.
For creative uses, another is with non-vac-advance units, where retard is active all the time (and the engine timed so it's 'normal' with retard active), then the retard deactivated at cruise to give increased MPG with effective advance. I've seen this done with one throttle switch and a Hobbs switch.
Another popular creative use was during the early '80s with that "new" stuff - nitrous. The white wire was simply attached to the nitrous solenoid, so when triggered it would retard the ignition. This was a welcome simple solution to large HP shots that otherwise required involved techniques to provide the necessary retard for high horsepower with high cylinder pressure.
The same technique was used with superchargers and turbos for retard with pump gas before the 'turbo' version of the DS came out. Without a retard function, you were stuck with either ridiculously low compression or high-octane fuel.
BTW - if using DS, unless there is need for some other function, I strongly recommend the red-grommet box (California/non-Federal) over the others as it is considerably more powerful. While not commonly used in decades past due to extremely
high cost and low availability; the red boxes are now common and cheap. The red box has dwell control, uses no coil ballast resistor, and so allows the use of HEI-style coils with higher spark energy and much wider gaps (or higher compression) and better firing of polluted (rough idle) and lean-burn cruise mixtures.