We need an option to rotate declarer to the bottom of the diagram, dummy to the top, defenders to the left and right. Center should be a box where the cards played are displayed oriented to the side of box of player who played the card.
After the bidding is concluded, the hands should be rotated so that declarer is at the bottom of the screen. Opening leader will be on declarer's left and remove confusion as to who is on lead. This change will bring BBO into conformance with the presentation of all bridge hands in the known universe.