I think you are far busy while doing the approach (contacting ATC, flying the airplane in the approach...), rather then after landing. And it would be fairly complex, because a menu should list nearby airports, you'll have to select one, the airport AFCAD should be read, a list of parking being presented.
Cumbersome and without any real benefit, because it won't add anything to what GSX does right now, just a different way to do something you can do already so, it's best we'd spend our limited time and resources to add *new* features, not just new ways to do the same things.