MLB (and the NFL) alignments come from the fact that they come out of historically two separate leagues.I was thinking like with MLB, where teams in close geographical proximity are usualy split between the two leagues. I kept the Rangers specifically with the other Original 6 teams (and notice the sixth one that's in the west is also in the same conference). Notice that every other conceivable rivalry is preserved.
The Rangers, Islanders and Devils have all been in the same division since the three have existed in the same metro area. Frankly the Patrick/Atlantic/Metro division teams have a longer history of being grouped together than the “Original 6”.