most schools want on their set annual travel plans. First, that's about the max radius that most can ever recruit from. Second, that's about the max driving distance for your fans to travel. Most schools are like a Texas, Bama, or SoCal (and, due to unique circumstances, BYU) with large pockets of fans across the entire nation. But the smaller schools have fans that do want to travel. The B12 already added WVU. Adding both Orlando and Provo to the mix, which extends the travel in BOTH directions, is not something that most, not some, but most of the B12 schools are not going to want to do.
If the B12 goes east for UCF, it will stay east. We've already heard most, not some, but most of the B12 schools say they didn't like the travel as far west as for games in Boulder. Last I checked the map, Provo is further west of Boulder.