I remember the most mindblowingly cool idea from M.U.L.E. on the Atari 8-bits I used to play it on, was the real-time joystick auction mode.
My Dad was an economist. When he saw this game, he was really impressed by the interface. He thought it had some really interesting ideas, like the auction mode. If I remember correctly, he thought it could help as a teaching aid.
Nice to see it back. I'll have to try it again.