no, no, no...
I'm thinking you get 1 point for a win in week 1, 2 in week 2, etc.... that may be extreme, but maybe it is 1, 1.1, 1.2, etc...
That way, wins at the end count more than the beginning. I would rather see an 0-8 team become 8-8 and make the playoffs than a 8-0 team that goes 8-8.
No BCS stuff, just a simple weighting that meakes each game worth more than the last.