I've suggested it a few times as a utility module, most recently here:
https://forums.frontier.co.uk/showt...oration-Development-a-Galaxy-of-Possibilities
It certainly would be a great feature, allowing us to explore systems currently un-taggable. (is that a word???)
Yes exactly that, a one time emergency boost button hidden in a big red glass fronted cabinet
Could even be useful outside of exploration as a loong range high wake from a sticky situation, and could give some lore/credence to the neutron double scoop exploit.