You're right about consistently good programs, but there are consistently middle-of-the-road programs that have occasionally wonderful years and are always respectable. I submit that a home-and-home series with respectable makes a whole lot more sense than a one-off with Fairleigh Freakin Dickinson, for crying out loud! The result, in terms of the benefit to the UConn team, is not the same whether it's Hofstra or UCLA. It's just not, even if UConn beats each team by 30.
So, if I were running the world, who would I schedule? Well, I cannot know whether these teams would be interested, and in some cases the travel would be a logistical nightmare, and at least some of these teams would not want to use up a non-conference slot for a near-sure loss. Even as I grant you all that, I ask you to suspend disbelief for a moment, okay?
Marist. Temple. Florida State. Wisconsin-Green Bay. Gonzaga. ASU. UCLA. Cal. Maryland. Miami. Xavier. Iowa State. Texas. Texas Tech. Georgia Tech. Vanderbilt. Penn State. Kansas State. Michigan State.
Some of these games would be blowouts. But while this is basketball, it is also entertainment. Fact is, people have actually heard of these programs, as opposed to, say, Iona, which lots of people have never heard of at all. People might want to come just because it's Michigan State, even if Michigan State isn't paricularly well regarded this year. They are marquee universities, if not marquee programs, and that alone can generate some excitement that the Towsons of the world cannot.