I'd be very surprised if an 8-team playoff (which I agree is more likely than not going to happen no matter what the powers that be say) isn't incorporated into the bowls:
Rose: Big Ten vs. Pac-12
Sugar: SEC vs. at-large
Orange: ACC vs. at-large
Cotton: Big 12 vs. at-large
Winners of those 4 bowls move on in the playoffs. The power conferences keep control of the system and revenue, the prestigious bowls that feature power conferences are maintained, and the power conference championship games become de facto playoff games (which in turn drives more revenue toward them) . It's not an accident that every single thing that I just said was geared toward what the power conferences want: I think that they'll eventually go to 8, but it will be on their terms where they're able to capture almost all of the financial upside. Fans might say that they're weary of the bowls, but they're still a mechanism for the power conferences to control the overall system and continue to provide better rated programming for ESPN than 95% of non-NFL events (the latter of which explains more than anything why they continue to exist despite being perceived as "meaningless").