I really, really wish more professors had provided slides up front; many don't change them year to year anyway, and it would have helped immensely to prepare for the lecture and be more actively engaged. Syllabi are helpful, but even these days I insist on having at least a purpose if not a full blown agenda for meetings, otherwise what's the point?
As I wrote in another comment, a lot of my experience is with conferences. If I had presentations pre-loaded on my tablet, I absolutely think I'd get more out of many presentations by taking notes on PDFs rather than (usually) typing a bunch of notes and snapping pics of slides that I may or may not get access to at some point.
It's very simple: students who get the notes up front are less likely to come to class.
Before you tell me this is silly, it's a fact that some students need help to decide to come to class. Should we reduce the absolute goodness of the class to assist less-than-perfect students? We already do in so many ways. Sigh.
