I know this is an old system in comparison to CGX or Picasso96, but when I was running it way back when (my good old U of Lowell card) I thought the coolest thing was that I could run a multi-monitor system with it and support multiple graphic cards running simultaneously.
Honestly, I only pulled off the Lowell card and ECS, but having both monitors running at the same time was rather cool!
AFAIK, EGS is the only system with this capability. Or should I say, IS EGS the only system that can do this?