If you take a lead from these Case Studies and incorporate some of the approaches into your own flying, MiGMan’s World Tour already contains enough material for TEN YEARS of FUN. That's the way I fly, often spending a week getting to know each city.
Proflight was the first flight sim I had seen since the Apple ][ in 1982. I had bought an Atari ST to arrange and print music for my string quartet and included in the package was a demo of this amazingly fluid sim, running at 600 x 400 pixels (in monochrome). There began my true flight sim addiction.