It is small but there will be options for future expansion. Plus it has the other amenities that Rentschler would never have, like academic space and other luxuries. Northwestern's new stadium is also 35,000 and I doubt there is room for expansion, but it is a different kinds of stadium at over $850 million.
"The plan presented today by USF leadership includes a project cost of $348.5 million, which has been revised from what was approved by the board in
June 2023. Since that time USF has added to the project’s scope,
including design and structural upgrades for potential future stadium expansion beyond the current expected seating capacity of approximately 35,000, build-out of academic space in the facility, vertical expansion of the Tampa General Hospital Center for Athletic Excellence, and enhanced locker room amenities, in addition to the general cost of goods increasing over the past two years. The funds added to the project will come from interest earnings on the $200 million in financing previously issued by the USF Financing Corp."