I get what you are saying, but telling a Cat 5 to sit and not worry about winning, is basically telling them not to enjoy racing until they hit the 4's. If I want to do that, maybe I can just Cat up doing an MS150 ride. People are always trying to marginalize Cat 5. Despite having a crowd of less than 5 people, a course not swept or set up, no medical support, no team support, not even significant others caring to show up its still a race to the people toeing the line. We still train just like every other racer, go to sleep hungry, attend the hammerfests, obsess about power numbers, etc.
Whatever system gets put in play it shouldn't interrupt the actual race.