This would then free-up resources to deal with the other more mundane obligations of the city. Baseball will not go away if the Padres can't get their private financial house in order. Baseball will still be played in volunteer leagues on public lots throughout the County. What would go away is the pressure for rising prices linked with public subsidies. Or perhaps the major leagues would decide to prove how major they are by providing additional investment in franchise cities, rather than leaving to local taxpayers.
Downtown needs a new library.
The region is blessed not only with a beautiful branch library system, but with many universities where the public has access to outstanding materials and resources. Library at UCSD is already there, and with a healthy endowment from the private sector. You can't check out the books for free, but anyone who can hop on a bus has access for free. In this age of decentralization and networks. The internet is the library for the 21st century.