It would be fun to have a page that tracks ML debuts throughout a season, so that you can track other teams' top prospects. In real life, when Strasburg was called up, ESPN hyped it for a week. Here, the HBD equivalent of Strasburg would make the league and be there several months before anybody knew about it.
Young talent is what makes the game sexy. It's much more fun to follow a 20 year old wunderkind as he attempts to break records than it is to see a 28 year old do the same.