Without diving too deeply, given the events of these weekend the following seems likely ...
Of the 20 selected potential sites ...
Arizona, Arkansas, East Carolina, Florida, Mississippi State, Notre Dame, Ole Miss, Oregon, Stanford, TCU, Tennessee, Texas, Texas Tech, and Vanderbilt look like #1 seeds and hosts. These leaves two sites for the remaining six. IMO you can eliminate Pitt. I also think that Louisiana Tech will evaluate higher than both Charlotte and Southern Miss. Charlotte was the regular season champ (by 1 game - 2 wins) but schedules were not balanced. The loser of Tech/USM this weekend was likely eliminated, but I have seen stranger things. Not sure three sites are necessary in Mississippi either.
As such, the final two spots may come down to South Carolina, Gonzaga, and Louisiana Tech. Also keep in mind that Old Dominion is a solid #1 seed, but will not be hosting. They cannot go to Louisiana Tech as a #1 seed. Might they go to South Carolina with the Gamecocks a #2 seed? Or will South Carolina host as a #1 seed and ODU goes to Spokane as a #1 seed and Gonzaga as the #2 seed?
If Louisiana Tech had won today, they would be hosting. But it is now nail-biting time in Ruston and it really depends on how they are evaluated against South Carolina and potentially Gonzaga.
Brian