I think there will be an adjustment period, for perhaps the rest of this year, or even longer. It's easy for top teams when they play NOT top teams - they simply out talent and also are more athletic than the other teams so defense is not really an issue. However, when 2 well coached talented teams play, suddenly all the things you did on defense against Eastern Paduka University no longer work. That's part of the reason why so many players fouled out of the Baylor/Kentucky game, and also why everyone else had so many fouls.
It's hard to defend by only moving your feet. It's hard to defend by keeping your hands up and not pushing or grabbing players to slow them down. But that's what the coaches need to teach, and I believe no one does it better than UCONN. I would think it would be a much bigger adjustment for teams that relied in the past on (IMHO) overly physical defense, and by pushing, grabbing, and slogging it out in the post. To me teams like Rutgers, Kentucky, Notre Dame, Louisville, Tennessee, Maryland, and probably a good number of other top teams, need to learn how to play defense the new way it's being called.
Ultimately I think it will be good for the game and will allow for higher scoring games. It will reward kids who can shoot with someone in their face, as opposed to someone draped all over them. It will reward teams who play offense that is fast, free flowing, and full of movement. I believe it's tailor made for the way UCONN runs offense. We will see how everyone else does in time...