Thanks for bringing this up madOne, I'd forgotten!
We've discussed this on the discord, but I think it's worth talking about again since we never came to a conclusion. It's technically possible if you go back far enough, but it was removed, mainly because of solar flares being highly likely to ruin Devilstrand with its long growing time. I'm for keeping the game's running scene fresh, so I'd agree with your suggestion.
Have a wonderful day, Archduck
With the first Rimworld DLC, Royalty, there was an interesting new addition to the gameplay. A new way to win was introduced, called Royal Ascent. To get to this ending you need to climb the royal ranks to Count, then protect the Stellarch for 15 days, whilst keeping his mood above 25%. The Stellarch will then give your remaining colonists a ride off the planet. Given it's unique way to win, I'd like to suggest that it be added as a new Escape% subcategory.