Change the coordinate system for the Relationships diagrams to allow an (almost) unlimited canvas size
I'd like to suggest changing the coordinate system for the Relationships diagram, so that tables are plotted onto the canvas in relation to the centre of the canvas. The centre would be coordinate 0,0pixels, marked with a small cross-hair. An item placed at 122,344pixels would be in the upper-right of the canvas, whereas an item placed at -455,-677pixels would be in the bottom-left.
This would allow the Relationships canvas to have an (almost) unlimited size, on top of which, a better zoom, scroll and print system could be built.
For backward compatibility with earlier versions of Access, existing Relationship diagrams would automatically display top-right of the canvas, with the default scroll placing the 0,0 point visibly in the bottom-left of the application window. If saving for an earlier target version of Access (97, 2003, etc), coordinates would be adjusted to reset the 0,0 point so that all coordinates have positive values.