Take a look:
http://www.swissarmylibrarian.net/2008/11/13/what-is-necessary-what-is-possible
Not that any of this is rocket science, or isn’t discernible by anyone else that works in a library. I think I did this as an exercise to illustrate patron-centricness. When it comes to library services, everything we offer should be addressing a need from “up the chain.” Offering services just because we can, or because it’s something being pushed on us from “below,” doesn’t justify that service. If a service doesn’t address a patron need, then should we really be offering it?