Yes a jump pilot endorsement is really going to make a difference when the engine gives out.
In my experience (humble as it is as I haven't flow the Space Shuttle like most of you guys) the 2 things that always work in these operations are the engine and the radio. Most of the time they give up is because some newly minted CPL with his 200 hours reckons he knows more about managing a fuel injected 6 than the old hands that have been doing for years.
But please go on, my telly isn't working so the armchair crash investigation is the only entertainment I'll have today.