Random sidenote: I could see the .500 rule repealed for some of the lesser tournaments. And by lesser, I mean NIT.
Think about: Who's more deserving, a 15-17 (7-9) Georgia Tech out of the #1 conferece, or Southern Miss 19-14 (9-7) out of a much weaker conference? I'd almost argue that GT has the better resume, at least in this shallow analysis. RPI includes SoS, and notice how GT has an RPI way, way up there in the 60s.
While it's blasphemy to say this on a mid-major message board, I'd rather reward a 7-9 ACC record that includes unbalanced league scheduling than a, say, 9-9 MVC record. But it's close.
With all the lesser tournaments, the NIT is more freer to not worry about snubbing 20-win mid major teams.
Watch it. You're sounding a lot like the ESPN pundits when they talk up their BCS teams over mid-major teams!

The good thing about a fourth postseason tournament though is that some of these under .500 BCS teams could see action, as well as a team like IUPUI that got snubbed last year with 26 wins. I don't care how weak their schedule was, but leaving a team with 26 wins out of postseason is terrible. I thought they were offered a CBI spot but they didn't want to pay the entrance fee. With the CI.com tournament sponsors will foot the bill, so that would be good for teams like IUPUI that have great records but can't draw the fans that would help them make money.