I think you might be a cold lonely birdman- the Birdman competition is at Bognor pier isn't it? Or it used to be.
Having the john in the rear galley seems to be a fairly established UK design practice, like superstalls in jets. The HS748 was the same. It's meant to be so awful you cross your legs instead. The Jetstream is OK. The Handley Page Chief Test Pilot, John Allam, who checked it out 42 years ago was an old boy of my school, and I went on a school visit thanks to him. They wouldn't let me stick my head in a Vulcan, which I'd have killed for- I suppose at 17 I might have been a Roosian spy!
More important is why we are still flying around in designs over 40 years old.....like the 747? It's like flying around then (1967) in a 1925 aeroplane. Passengers would have fled in disarray if you turned up in 1967 at the departure gate in an HP42, so how come they don't run away screaming when we turn up in something 42 years old now? Maybe progress isn't as fast as we like to think sometimes! Hasn't design changed in 42 years- my goodness we put the tailplane on top of the fin now! How daring!