Totally disagree. Having the Cinderella teams in makes it more interesting - better than some 8 or 9 win P4 teams that aren't going to win it all either. If they expand to more teams, IMHO one of the things that should go with that is every conference champ in 1-A gets in.
This--the playoff should be (using the rankings)
1-Indiana* (16 Southern Cal hosting 17 Arizona)
2-Ohio State (15 Utah hosting 18 Michigan)
3-Georgia* (14 Vanderbilt hosting 20 Tulane*)
4-Texas Tech* (13 Texas hosting 24 James Madison*)
5-Oregon (12 Brigham Young hosting Boise State*)
6-Ole Miss (11 Notre Dame hosting Duke*)
7-A&M (10 Miami hosting Kennesaw State*)
8-Oklahoma (9 Bama hosting Western Michigan*)
Everyone is happy
*conference champ
Note: this would obviously be different without CCGs--for example, UVa would have gotten the auto bid)