Steve B in his blog Designing Better Libraries states "... that user experience should be at the foundation of what drives the library to deliver memorable and unique experiences, and that it must become a core guiding strategy for the present and future."
Unlike technology tools and applications (eg., texting, e-books, blogs, email, etc.) which keep changing at a mind-numbing rate, User Experience (UX) is here to stay. People are here to stay. And the focus of the library should be on the UX -- this is what brings 'em back -- creates sustainability -- and generates library supporters. This is one component of a business model that can be adopted by each and every library into their strategic plan and daily work flow.
Create a UX that meets the needs of the community. If it is a quiet place to study and learn ... then create that. If the community needs a social place to congregate, then so be it. This will require the library staff to be very much aware of their community as well as flexible to incorporate the right combination of UX. Be sure though it is the needs of the community that are being met and not just what library staff "thinks" the UX should be. Definitely a challenge ... however, libraries are up to it!