If the field is expanded to 96, then just 27.6% of teams will play in the NCAA post-season.
The NIT is now owned by the NCAA and so the NIT would die off (and to be honest, I doubt very many people would miss it). Would you rather be one of 96 teams to play in the NCAA tournament? Or, would you rather be one of the 32 teams playing in the NIT?
I'll take the NCAA tournament any day. Plus, that all gives us one extra day to watch tournament games. Weber would also have a much better chance at winning a first round game, getting some confidence, and knocking off a team on Thursday/Friday.