It would be nice from a fan's perspective if their college heroes would stay in school for 4 years instead of cutting out early. Up until 1972, I think, collegiate football & basketball players could not turn pro before their graduating class: Wilt Chamberlin, for example, played his freshman season on the Kansas jv team, his next 2 years on the varsity team & played on the Harlem Globetrotters (nonprofessional) his senior season before going pro with Philadelphia. I'm unsure if college hockey players had to abide by the same rules.