In order to compare own city layout with others, display of squares per building type is a valuable feature. I like the %-display of roads efficiency the most as it shows how better to design your streets.
However, the summary of all squares (which exists when opening your own city) does not show if you open cities of other players. Comparing own city design with those of other players of the same city size would give an extra boost to improve your efficiency .
Looks to me as a possible quick fix.
