We're all debating the wrong issue. Expansion wouldn't be about basketball, fairness, getting more teams to have a chance, etc. Expansion would be about MONEY.
The NCAA keeps most of the BB Tourney revenue, and its big bucks. But March Madness is not so big that the NIT and CBI don't still exist. And now the new Fox Tourney in Vegas with 16 teams from the "Big" (12, East, Ten) Conferences. Point being, the NCAA thinks they are leaving money on the table so how do they rake all that in? What do they hurt to do it?
Its also partially why football expansion took so long. What we see happening to the non-championship bowl games (players opting out, playing 1/2 game, not going full speed) was always a concern. The bowl games would become irrelevant. NIL just matured that problem overnite.
So expand the Big Dance gets more guys to stay for that 1 more game. But it almost has to kill at least 1, if not 2, of these post season tourneys. Frankly, maybe thats ok. Million other places these guys can go play ball before summer starts.