PN said 787. I would have added A350 to that too.
If you're talking "image", how many people can really differentiate between a 787 and A350? Of for that matter 777, 787, A300, A330, and A350? Wide body twins all look pretty much alike. And seeing as this airplane is going to serve for 30+ years, how is ANY aircraft going to look "cutting edge" for 30+ years? Also consider that the current Air Force One is a 747-200. USAF could have opted for a -300 to be more "cutting edge", but that was not what they did.
It is my opinion that the whole notion of a "cutting edge image" is a red herring not at all applicable to the mission of this aircraft.