I've finished most of the buildings for the Monarchy town (Only unit dwellings are missing), and I have a concept for the music as well.
Check out this video of the current state of this town screen:
Here are the current buildable structures:
Some buildings will be passive (like the square and the monument produce revenue and increase morale), but some will be actively usable, e.g.: in the gunpowder factory, some firework-like items can be bought, or the hangar can create a zeppelin.