Legi i wanted to suggest easy to make feature that will make your overlay more informative: pie chart for income per minute! Having the raw numbers like "red 21k/min, green 12.5k/min, purple 39k/min, cyan 7.5k/min" works too, but imagine there is a small 64x64 circle which just shows the percentage of global income each player has. You would just take a quick glance and immediately see how big everyone really is economy-wise. (maybe there has to be small version which is always on screen, and a big version which would also show more info like oilcount/hackercount etc, if that data is available)