I am a nostalgic...but I think that no plane will replace B-747 nor the 100 nor 200,300,400.........I don't like Airbus (I'm certified on A-320, maybe 330 or 340 can be easily compared) but not even B-777, same family of the king of the air has the same charme!!!!
If one day I will be very rich...well my dream is to have a B-747