Due Date Display
It would be helpful to display due date(s) for item(s) in the location drawer. This would enable staff and patrons to see this info in one step when they select the item's location.

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Alison Pruntel commented
I would want this to be optional. While at first I wanted it (it displays in classic WebPAC), I then realized that it's cut down on patrons asking repeatedly about items close to or slightly overdue, as they focus on the due date ("that should have been returned last week!"). They now just see it checked out and place a hold vs. not placing a hold and pestering staff.