I really like this generator (mainly because we also use it with the Azgaar Fantasy Map Generator), and I wonder if it would be possible to add some small details.

Controlling the number of buildings, it would be interesting. Finally, for "important" buildings, such as temples. Or "palaces".

But what I would find interesting is the possibility of adding several walls to separate, if desired, the different neighborhoods already distinguish when you put the color scheme "Vivid". For example to separate the shopping districts from the residential districts, the "industrial" neighborhoods (which house the forges, tanneries, slaughterhouses, etc.) of the neighborhoods inhabitants affluent (noble or otherwise).

In the meantime, I find this city map generator very convenient.

Unfortunately, it is not possible to specify the desired number of buildings. Buildings are not created one by one, instead they are a product of recursive splitting of larger areas of a city, so it's hard to estimate how many of them there will be and adjust anything to spawn more of fewer of them.

More complex walls configurations will become possible eventually, but not anytime soon.

Cheers!