Would be interested to hear you elaborate on this. By inserting Kariya I definitely did not re-create the Bread Line (which it may have looked like I was trying to do when I took Iginla), but I think the line works fine as a scoring focused line, not meant to go power vs. power (the Henri Richard line is meant to match up against the other teams best).
As far as scoring line chemistry goes, Boucher is the defensive conscience, Iginla the physical presence, and Kariya is basically all offence and was really needed for my PP (although the team he Captained to Game 7 of the Cup Final was fairly defensive and coached by Mike Babcock). I think Boucher is a center that would work well with Kariya's style/creativity. While Boucher is certainly a playmaker first, it's important that he's not the type who needs to be carrying the puck all the time, the Bread Line was known for their complex offensive plays with multiple passes between players. Kariya is a balanced player offensively, which is also important, if he was all playmaker the line wouldn't work, but Kariya was a strong goal scorer.