This is a bit of an idea I've had for a while, but I'm terrible with hammer.
I'd love to see you mappers making linear maps. Unlike stages, have one long map. much like many surf maps. integrated jumps, with no pauses or fails. Prerequisites to continue through the maps.
the closest thing I can think of is bigbutt, but make jumps more specific and mistakes or failing to do certain tasks would halt the player and force them to the beginning.