Fantasy Futuristic worlds

Could you make a world which runs from 2030-2100 and have massive, fuel efficient, not yet existent aircraft? like the 797 and stuff? that would be fun.

Well, one problem. If you look at the airline industry today, nobody sees what anything beyond 2030 could be like! Of course, there is Airbus working on the new A350 stretch, the A320neo, and now the A330neo, along with Boeing working on the 777X (which I still say that the 777-8X and 777-9X needs to get added to AE,) not a lot of makers see what they could make past 2030.

A350-1100 seems still more like an idea than something being developed... From not yet decided projects, you've also got A380neo, and entire Boeing Yellowstone to think about from the big two... And a bunch of other stuff like Bombardier CS500 or even bigger, Russia thinking about new wide-body (re-engined Il-96 at least) and more options with developing planes, and a lot of things Chinese might do.

But I think there would be no point in putting those planes in AE, let alone something even more futuristic.

A380 900... Airbus concept plane, around 2050

And we can make some planes by our one...

I like the idea of a futuristic world, although I think it would be better from 1990-2040. Truth be said, you don't get to enjoy some of the newest aircraft (737MAX, A320neo, A330neo, 787-10) in most of the current worlds, with the most "futuristic" one going only as far as 2025.