When all hands are displayed in a hand/bidding diagram, it's easy to orient at a glance. But when only one or two are displayed, they can show up in several different "apparent" orientations, with the bidding above/below/either side. I have to stop and laboriously orient myself before I understand who's where.
It would be much easier for me if, forex, the bidding was always below, and there were blank "boxes" for the hidden hands. I would recognize immediately that I was looking at North and East instead of West and South.
Plus... it's free!