It would be cool to have missions to Antarctica. Things like flying in supplies to research stations and bringing in researchers for the season. Right now the sim has no landing strips in Antarctica, even though there are in real life.
I think flying near/over the polls, landing on ice runways and dealing with the extreme weather would introduce an entirely new challenge to the sim. It could even be it’s own progression branch in career mode, since you need special training IRL to fly near/over the polls.