This YouTube video, Transformation Lab - Prototyping the Future, is a very interesting look at some possibilities for the library of the future. Some of it seems a bit extreme and maybe more public library-ish, but it really gets at the idea of Library as Place, which seems to be discussed more and more these days.
I gave an informal survey to students where one of the questions asked what we can do to make their library experience better. I received suggestions that included: background music, more comfy couches, quieter work areas, allow food, wireless, best-sellers and pleasure reading, more computers, art throughout building, better computer chairs, "more help", and more signs.
Overall, it seems to be a lot about the library environment and less about library services. I'm looking into best-sellers, more comfy furniture is in our future, wireless is a campus-wide goal (I believe), and snack food will hopefully be allowed soon.
For further reading on this topic, there's a good article called "How to Evaluate Your Library's Physical Environment."