I was goofing around today and came up with this:

Division A: "Mountain League"

Portland
Sacramento
Golden State
Utah
Denver

Division B: "Sun League"

LA Lakers
LA Clippers
Phoenix Suns
San Antonio Spurs
That Other Team

Division C: "Gulf League"

Dallas Mavericks
Houston Rockets
New Orleans Hornets
Orlando Magic
Miami Heat

Division D: "Mason-Dixon League"

Memphis Grizzlies
Indiana Pacers
Atlanta Hawks
Charlotte Bobcats
Washington Wizards

Division E: "Great Lakes League"

Minnesota Timberwolves
Milwaukee Bucks
Chicago Bulls
Detroit Pistons
Cleveland Cavaliers

Division F: "Northeast League"
Toronto Raptors
New Jersey Nets
Philadelphia 76ers
New York Knicks
Boston Celtics

If you had to break this up into East and West conferences, ABC would be west and DEF would be east; you could do North/South (AEF/BCD), or even revolving conferences each year.

You could also do THREE conferences of two divisions each. I imagine the top two teams from each divison would advance to groups of 4 teams and have a "group phase" playoff where each team in a pool plays each other twice; the winners of the group and one wild-card team advance to a 4-team playoff bracket or whatever.

Anyyyyywhoo. Just thought I would share that.