As Emperor of BYU, I would keep the Provo HS football field/track to use for summer camps and intramural sports. The current buildings on the Provo HS would be used to expand academics, and therefore boost the enrollment. I’d be willing to explore the addition of new programs to the University. For example a medical school with a partnership with UVRMC. Since parking is often a mess on campus I would leave the existing parking at Provo HS. The empty field and the baseball structures would be torn down for additional classrooms.
Oh yeah, and the gym. It would have to be converted into a private practice area for volleyball and gymnastics.