The artist drawings that they circulated a year or two ago were VERY clever. The swooping lines made it look like a dolphin - but when you looked at the image stripped of all it's fancy lines ... guess what? It's Mummy was a 767 and it's Dad a 777.
Unfortunately, we are now in the era that the motor car manufacturers reached about a dozen years ago. That is to say that, the end user specified everything and the computers designed it and ... guess what? They all looked the same.