It is more a matter of making the diagram clearer. If the moves are indicated by fat symbols almost occupying an entire square (and the location of the piece as well), I think the current size would be fine. Of course some space can be saved by omitting the edge with the inscribed coordinates; this serves no function here.
It is more a matter of making the diagram clearer. If the moves are indicated by fat symbols almost occupying an entire square (and the location of the piece as well), I think the current size would be fine. Of course some space can be saved by omitting the edge with the inscribed coordinates; this serves no function here.