There's nothing tangible tied to a ceiling. Ceiling is tied to a prospect's ability to improve from where he is now, every player has a current and future grade. The older/younger, ability to add strength/size and how raw that player is will determine how far the present and future are apart. Not many players reach their ceiling, it's not designed for that, it's designed for maximum worth on the muscle. If a player doesn't reach his ceiling, it wasn't wrong b/c you're grading him on the most optimistic term. Players are drafted, signed, and traded for based on potential, especially amatuers and minor leaguers. Pujols' ceiling when he was drafted was much lower than his current production. If players were robots with no progression/regression, it would be scout speak. Baseball is an art not a science, you can make the most accurate stats for what has already been done, but there isn't anything with more value than projection as far as what will happen.