Cincy is a joke. Everyone was talking about how good they were last year, only to get beat down by I think it was Virginia Tech last year. For that matter, the Big East is pretty much a joke since they lost their powerhouses to the ACC (which wouldn't have mattered since the powerhouses haven't been doing that much in the ACC either). I'd gladly give Big East's automatic bid to MWC
That being said, I think the only reason why people are complaining this year is because of TCU. I know that Boise State finished perfect, and technically beat Oregon (let's face it though, Oregon is a completely different team now than at the beginning of the season), but I'm still not sold on them. Sure, they beat OK a couple of years ago, but OK clearly did not take them seriously (and OK sucks in bowl games anyway). The year after that, Hawaii got beat down by Georgia. The next year, Utah beat down Alabama (but to be fair, it was clear that Alabama didn't show up to that game, they just didn't care and no one can argue against that). I think that a lot of people are now thinking favorably on the MWC (which they should), but are still not sold on the WAC.
TCU is legit. I'm not sure if Boise State is. And hell, who did Cincy play? Though the current BCS system is flawed, I have no clue how one would implement a playoff system. How can you justify some teams playing less games than the other (talking about championship games)? What would that make the SEC championship game? Could you imagine a game where both Florida and Alabama rest their starters? Why even bother if it's not going to matter? There's still a lot of issues with the playoff system than many people are willing to admit, or even offer suggestions on how to impove