The 707 is really a wonderful accomplishment.  As for the 777 for me it's too modern, same goes for all the newer stuff.  I would much rather feel like an aviator than a computer systems manager.  A DC-8 would be nice and I'd love to see CS develop more historical aircraft. There are a ton of propliners, piston and turbine, that deserve to be covered and a really accurate De Havilland Comet is something with real historical significance.  I don't think CS should totally abandon the modern aircraft because they obviously are very popular and a lot of simmers never experienced the older aircraft and are more comfortable with new technologies but a focus on the aircraft of the past would be welcome.