I mean in terms of a larger gathering place of knowledge and ideas... Adding in meeting spaces and coffee/bar for beverages, etc would be a net positive imo. As for quiet, I'm not entirely sure that's always a positive either.

Oh... Hmm... It was much more awesome in my imagination. I'd even drink, just to make it more amusing. I've consumed alcohol in a library, but not openly.

This should be a thing. It might be a horrible thing, but it should exist.