Well, they arent play in games, they are Opening Round games, but I get what you are saying.
I like it. I have no problem extending the first week by two days. Tuesday and Wednsday night should be a lot of fun with the doubleheaders.
In fact, I've always felt that all four 16 seeds should be determined with the Opening Round games. It gives these schools a chance to win a game and feel like they are actually a part of thing, instead of just going out and getting thrashed, losing by 40, and being out of the tournament by halftime of game one.
They should just go to 70 and add two more opening rounders for the other two 16 seeds.