If there was no east and west separation there would be no title game. The SEC held no such event for 100 years. Then they added two teams, someone had a great idea to split them up and stage a made-for-TV championship game at the end of the year, ???? and profit.
Who says you need East/West separation? What they needed was 12 teams, and they figured to separate them. Im ok with the separation for rivalry & scheduling purposes, but not for determing whos in the conf championship game.