It's time to abandon the current conference/division alignment, as I have proposed expansion to 40 teams aligned as such (expansion teams marked with *):
Central: Chicago, Columbus, Detroit, Indianapolis*, Kansas City*, Milwaukee*, Minnesota, St. Louis
East: Boston, Buffalo, New Jersey, NY Islanders, NY Rangers, Philadelphia, Pittsburgh, Washington
North: Calgary, Edmonton, Montreal, Ottawa, Quebec*, Toronto, Vancouver, Winnipeg
South: Atlanta*, Carolina, Dallas, Florida, Houston*, Nashville, New Orleans*, Tampa Bay
West: Anaheim, Arizona*, Colorado, Los Angeles, San Jose, Seattle, Utah, Vegas
(note: I have proposed the new Arizona franchise inherit the history of the Coyotes from 1996 to 2024, with the Jets 1.0 history, including WHA years, being transferred to Jets 2.0)
The regular season schedule format would see each team play 50 division games, 7 against 6 opponents and 8 against the other one. Division matchups that get played 8 times would rotate every year. All non-division games get played once, alternating home ice every year.
For the playoffs, the top four teams in each division qualify. The American teams would stage their playoffs until each division has crowned a playoff champion. At that point the North Division starts their playoffs to determine one bid in the Stanley Cup Finals, while the remaining American teams are re-seeded and play for the other spot in the Stanley Cup Finals.
This would not only guarantee a Canadian team a spot in the Finals, but avoid a situation like 2016 where no Canadian team qualified.
Quite frankly, after over 30 years without a Canadian Cup winner, Canadian media companies should demand the implementation of this if the NHL wants to continue to have a national TV presence in the nation (regional broadcasts would be unaffected). Keep in mind that when the NHL was founded in 1917, there were only Canadian teams, and thus at least one participant in the Cup Finals every year (back when it was a multi-league competition) was guaranteed to be from Canada. And I think Bell, the CBC, Corus, and Rogers will be very good at playing hardball with the NHL when the time comes.