DuckTownHusker, your numbers for NCAA baseball are off... 64 teams make the playoffs; the CWS is only a part of the overall playoffs. So it's only NCAA Football that has a single-digit #
Thanks for the catch! Either way, even if FBS expanded to an 8- or 16-team playoff, it would still have the lowest ratio of teams making the cut. Personally, I like the 4-team approach but I also think an 8-team model would be a nice mix of teams - probably the top 4 conference winners and top 4 at-large teams.
Team #5 (or #9) will always gripe about not making the playoffs, but it's a moot point. I can never once recall a year when there were more than 4 undefeated teams in the nation. And generally, there are less than 8 teams with a single loss.