A fourth line of Smith-Kruger and Shaw would be really good I think. From there you could mix and match things up quite a bit, gives you a lot of options. Maybe put Bickell on the top line with Toews and Hossa, you could keep the Versteeg, Richards, Kane line intact if you wanted and then a crazy line of Sharp-Teuvo and Saad. That's the deepest team in the league there. Why waste a roster spot? Shaw does the same thing Carcillo does, except he isn't a dirty player about it.