I realize and understand that there has been an effort to move away from the possible alignment talk. Nevertheless, I just discovered that it had been a part of this thread, and I would really like to take the opportunity to once again post my thoughts on the matter.
First off, I imagine that the League would just rather stay with the 8-team Division setup; however, the possible addition of a team in Seattle would cause a significant problem with respect to which team would exit the Pacific Division. That said, it certainly would then seem likely that the League would consider a 4-team Division setup.
As always, how new Divisions might be formed, with respect to which teams go where, is a hugely controversial topic, both inside the League, as we know, and among fans interested in the topic. However, pretty much every time I look at this, seeing how the West could be divided up just looks so much simpler than how one might form new Divisions in the East... the East is always a headache with respect to this!
Anyway, here goes my (first) take on how it could be done, with two options for the East:
The West
Division 1: Vancouver, Seattle, San Jose, Las Vegas
Division 2: Los Angeles, Anaheim, Arizona, Colorado
Division 3: Edmonton, Calgary, Winnipeg, Minnesota
Division 4: Dallas, St Louis, Chicago, Nashville
The East (option 1)
Division 1: Boston, NY Rangers, NY Islanders, New Jersey
Division 2: Montreal, Ottawa, Toronto, Buffalo
Division 3: Detroit, Columbus, Pittsburgh, Philadelphia
Division 4: Washington, Carolina, Tampa Bay, Florida
The East (option 2)
Division 1: Boston, Montreal, Ottawa, Toronto
Division 2: Buffalo, Detroit, Columbus, Carolina
Division 3: NY Rangers, NY Islanders, New Jersey, Washington
Division 4: Philadelphia, Pittsburgh, Tampa Bay, Florida
Aww hell, I could post several more options for the East, and each one would have numerous detractors.
Final comment here... I agree with the people who say that the League could eventually handle 36 teams. Then go back to 6-team Divisions, please; it makes this alignment issue easier.