I live two blocks from the downtown library and at the moment I avoid walking by it and go to the City of Saskatoon building side of the street. Its current state draws a lot of people that harrass people walking by - even witnessed a guy with wire cutters stealing a bike next to the front doors this summer lol. I would personally just like to see it demolished and turned into a parking lot now as the suburban libraries can cover what an iPad somehow can't do. 90% of the time I go there, the book I want isn't there and I have to drive to a suburb location anyway.
On a plus note for 4th Ave... High Noon Barber opened up last month at 233 4th Ave North. It is a really awesome atmosphere that we didn't have downtown taking up space in a building that was vacant forever. I highly recommend everyone check it out for men's haircuts and shaves - they also feature a ton of great local hair products. Prices aren't too bad either. I'm not affiliated lol, it's just great to see something like this in a more central downtown area.
http://www.highnoonbarber.com/