Is the same. I have not looked at that code. It may or may not change.
Town planning changes involve more successfully making towns on the map. It failed a lot before due to excessive randomness and retrying the whole process instead of specific sections. The town tiles are the same layouts.
A township is a city, town, countrytown, oldwest or roadside type of location made up of a random range of tiles and these change based on world size.
Yes, we want better and more stamp variety, but there is no timeline for when that might happen.
Towns don't have a shape. I think they just grow in random directions, but I have not looked at that code, but plan to as I improve the systems.