I´m going to make changes, I´m making probes with arena as city. The real beuty of the city is with wizards towers improves the aspect with various graphics.
The only function is to see the progres of a diferent city. Copy the file to Images/races. You can change the ILB in editor/races, chose one for example halflings and choose the giant near botton of the racial stats and after save open the map editor and put a halfling city. You can modify its size and buildings to see how the city change.
But it´s not a final version, I know that isn´t very good, I put here for a Merkraad request.