Yes, but at least it is a low hanging fruit. And yes, the variables in the keyed infos will help more. Maybe it would be useful to add code that calculates the total memory usage for units, cities and the like and displays it somewhere in the UI. To reduce the graphics usage for units there is the dynamic unit entities feature Koshling implemented. But I am not sure if you have that active or if it ever was fully debugged. It tries to replace the graphics entity of all units that are not actually visible by the same dummy entity.