Surely it wouldn't be that difficult to set aside 7 bowl games, and have the Top 8 teams qualify for them. 8 teams play in 4 bowl games one weekend...the 4 winners play the next weekend in 2 more bowl games, and the two winners of those play in the final bowl game for the championship. Have the 7 bowls rotate as the 4 BCS bowls do now (ie. one year Fiesta is the biggie, the next year it's one of the first-round bowls, and the Orange Bowl is the championship game, etc). Keep all the other bowl games so teams 9 thru whatever can still have their moment to shine.
Bowl season goes about 3 weeks now as it is. It shouldn't be that hard to do.