This is in the very early stages. Yes, athletics gets the most use out of the system, however, more than likely the money will not come from them. If you're not familiar with University politics, graduation ceremonies trump all other events through out the year in priority, importance and finances. We have 2 ceremonies in May, 1 in August and 2 more in December. We are also home to 6 high school graduations in 4 days in May. We have about 10,500 for each ceremony and about 1700 graduates each time. In short, our total for the graduations throughout the year come close to matching our basketball total attendance.
The other speakers you see are used for graduation only, but it has been requested that speakers hung in that location be reconsidered. There currently is not a delay ring, but there would be one with a new system, for various reasons. Yes, there are many events when those bleachers are not used and are pushed in.
Please be aware I am playing devil's advocate with you all somewhat to better answer the questions posed to me by the audio illiterate. Again no system has been designed, no company even hired yet. However, the folks that would be cutting the check and those organizations that the system would effect have expressed these concerns.