I support the expansion because I oppose weak automatic bid teams making the tournament. I'd prefer a 64-team field based solely on RPI or another more sophisticated algorithm like Sagarin or Pomeroy or Greenfield. But a good compromise is seeing most of the weak sub-64 RPI teams get beat in the first round.
In the past the first round has been boring (except for occasional upsets) because the matchups have been so extremely lopsided. Now the first round will be more competitive and interesting to watch, and so will the round of 64. Any sub-64 RPI teams that make it to the second round will actually deserve it because they had to beat good teams.
I'm also glad to see the NIT folded into the NCAA. It just clogged up the airwaves for a meaningless NIT trophy. Now those games will count toward something important.