Well, they are only bringing in 10 at the most (I believe), so it would take about 40-50 simmed seasons to have "real" MLB Players. By that time, everyone will be retired, and the league will be full of rookies. Also, the players they are bringing in aren't all-stars, they are simply average, role players. I own the Honolulu franchise, and I definetly wouldn't want a team of all ex-MLBers