Good point. If you have a chance, read on the Dayton board their publisher's experience as part of this years Mock Selection committee.
Fascinating stuff, and they uncovered a really interesting point about SOS that has been overlooked forever.
As to the RPI, he noted the following, apparently offered by Scott Barnes, this year's chair of the Selection Committee:
One point the NCAA made clear: margin-of-victory won’t enter the computer rankings any time in the near future. The committee felt margins create a moral hazard on the playing field, encouraging teams to run up the score over good sportsmanship for the sake of padding the resume’.
One other revelation before we got started: contrary to widespread rumors, there’s no additional yet mysterious post-RPI point system the NCAA uses to massage the rankings and reward or penalize teams for meeting or failing to meet certain performance standards. The committee uses the RPI straight out of the box and takes it no further than that.
That said, the NCAA does reference additional sources from time to time including Sagarin Ratings and Pomeroy Ratings, but does so more as a sanity check of their own data than a substitute. They want to acknowledge intelligent people beyond the NCAA’s perimeter that do great work and they aren’t blindly ignoring someone’s product that might add something to the process. But it’s mostly up to committee members to seek outside data on their own that is most compelling and helpful to their work. With Internet connections everywhere in the room, the barn door is open if one chooses to use it.