I don't know how ESPN selects their pick up games through out the year. Whether ESPN picks it themselves or the MAC picks them, I am willing to bet a significant amount of money that whoever makes the final decision is only concerned about good basketball play, not by how many butts there are in the seats, no matter how "impressive" it may look for the conference.
I for one and THRILLED we got picked up for ESPNU. I know we get at least 1-2 a year, but anytime we're on national TV, I get excited.