The week numbers beside every week in the date navigator add a huge amount of visual clutter (e.g. "17/18", "18/19", "19/20", etc. next to each week) and are not useful to me. Being able to hide the week numbers would make this view far more useful to me and reclaim the space of ~15 characters per line (for 3 months) giving the useful part of the calendars far more space.
kinda like this idea. I don't remember why we have "17/18" instead of "17" either haven't looked at the date navigator code in a long time.