Adding one team to each current division is sooooo much better for business than going back to the six division model.
You absolutely don't want a SE and SW division again.
I don't see why 6 divisions of 6 would be so bad. That's enough teams to ensure at least ONE of them is good. Let's add SLC, HOU, QC, and ATL to the mix:
Northwest: SEA, CGY, EDM, VAN, *SLC*, WPG
Southwest: SJ, LA, ANA, LV, PHX, COL
Central: *HOU*, DAL, MIN, CHI, STL, NSH
Northeast: *QC*, MON, OTT, TOR, BOS, BUF
Metro: PIT, PHI, NJ, NYI, NYR, DET
Southeast: *ATL*, FLA, TB, CAR, WSH, CBJ
That looks like a pretty good setup to me! #1 and #2 in each division gets a playoff spot plus two wild cards in each conference.