Line #1:
Ovechkin - Kopitar - St. Louis
Line #2:
Kovalchuk - Crosby - Iginla
Line #3:
Ryan - Toews - Parise
Line #4:
Nash - Stamkos - Perry
The first line looks dynamic with the skill and size of Ovechkin and Kopitar along with the creativity and speed that St. Louis brings. The scoring touch and ability of each of these players would just enhance each others game and bring them to a whole new level. Could be a very frightening line especially with Ovechkin out there running people over.
The second line also looks dangerous. Putting one of the leagues best playmakers with guys like Iginla and Kovalchuk is just plain scary. The size and scoring touch each of these three players possess would create space for each other and really draw the attention of the other teams shut down units. They would feed off each other and are also a dangerous threat to any net minder.
The third line could easily bring a balanced offense with the creativity of Toews, size and strength of Ryan along with the all around game of Parise. This could easily be the best shut down line in the league, while also scoring and reeking havoc on the other teams shut down line. This line is great in all 3 zones.
The fourth line certainly has the talent to match up with the other three lines mentioned prior but I'm not entirely sure their games would mesh together. Each bring their own type of game to the floor but i question whether the chemistry would be there with them. If they can come together and mesh i could easily see this line dominating teams and being just as dangerous if not more so then the other three lines.
When looking at these lines i would take the 3rd line mentioned. Mainly because i like the balance between them and the fact that all three players bring a great two way game to the table. Also by looking at how they play i think they would find chemistry playing with each other and could really come into bloom if put together.