New Dynasty League 4 Division Set Up

Guys, I am new commish of a 12 team (4 division) dynasty start up. Some of the basics, 0.5PPR and FAAB.

Our major area of controversy right now is the fairest way to assign the divisions. Odds/Evens into each conference and random draw from there was thrown out. As was “random draw” across the board.

Does anyone have any 12 Team 4 Division set ups they have used and found success?

At this point if it is a start up it is all rando. IMO, I have in the past have done it geographically. N,s,e,w.