Dumb. Clearly if you get players that all their ex teammates say are good guys and teammates your players will have a much higher chance of developing chemistry than with guys like Lind, Rasmus. Lawrie, Arencibia etc... I know the point you are trying to make, that even a lot of good guys might not all of a sudden become best friends, but that's like saying you can't trade for offense in the rare case that the guy might all of a sudden have a down year. It's a game of percentages, AA shifted towards their being a good chance the players would get along.