I think that it would be a good easter-egg for Fallout4. And maybe you can only see it with a perk similar to wild wasteland?. And maybe it should randomly generate in the sky so it would make it harder for people to find it?.

We have a thread for all suggestions and ideas for future Fallout games: http://www.gamesas.com/topic/1516247-fallout-4-speculation-ideas-amd-suggestions-250/