not even a ratings drop would do it. the reason the bowl system is so deeply entrenched is that schools get a lot of money when their teams make it to a bowl. and as everyone knows, football is played once a week for a reason, so you cant have a 64 team tourney like basketball. the max a playoff system would probably get away with in college would be 8 teams. meaning all those other teams that would have been bowl eligible in past seasons will get no money this time around.
like i said before, ditch the BCS, and go back to the old way. i was on the playoff bandwagon for a little while, but the more and more i think about it, bowls are to college football what march madness is to college basketball. and again, i'm a sucker for a pep band. attending pro sporting events doesnt do it for me, student sections at big colleges do it.