This picture was made a long time ago (2003?). In 1998, Quake 3 Arena was what converted my to EDSF. In almost every possible case of any game, EDSF is superior to WSAD. The problem is spending 5 to 10 minutes for each new game to map out an efficient configuration and, as you mentioned, impossibility of sharing controls. Playing all of those aircraft simulators from the DOS days is responsible for my playing all games with an inverted mouse Y-axis (aircraft pitch is inverted).