This doesn't impact the UKs or UNCs or Kansasae (if that is the plural of Kansas) but I would like to add four teams, and hence four more play-in games.
The four would be the top four teams (as selected by the committee) who won or tied for their conference regular season, lost in their conference tourney and did not get an at large bid.
This will shut up some of that "woe is me" talk about regular season games not mattering in one bid leagues.
I think this year the four teams would have been: Belmont, Illinois St, Oakland (or Valpo) and Akron. (Note, only one 'extra' per conference allowed, hence not both Valpo and Oakland.)
As for how to play it out in the tournament...
Currently there are 4 play-in games with eight teams playing in Dayton. 4 of the teams are picked from the "6-16's" and 4 are the bottom four at-large teams (usually 12's or 11's). This year those four were: K St, Wake, So Cal and Providence.
I propose having eight 16 seeds (the bottom eight), so all 1 seeds have a "play-in winner" to face. That is tough on the small conferences, but should make for better 1 vs. 16 games.
And I propose having the four new "extra teams" (like Belmont, Ill. St., etc.) play the four lowest at-large teams.
The four extra games would either make Dayton "really busy" for the two days (four games each day) or allow a second city (maybe one closer to the western 1st round sites) to be like a second Dayton.
If there are two cities (my choice) each would get two 16-seed games and two-higher seed games. This year having Oakland vs. Wake and Akron vs. Providence in Dayton, with Ill. St. vs. K St and Belmont vs. So Cal in Albuquerque would have been good match-ups and demonstrated whether Belmont and Ill St (for example) got shafted.
***BTW, if you are wondering if it ever happens that there aren't four teams that won leagues and lost tourneys and didn't get at-large bids... well this year there were fifteen teams in ten one-bid conferences that got left out after either winning or tying for their regular season crown. So, this would not give a guarantee to regular season winners, but it would give the best of them a second chance.