In additions (the following parts of the set) I plan to go one of three ways: 
1- (The way 1) Add new buildings (cafes, restaurants, stops, gas stations, shopping centers and stores and other "peaceful" buildings).
Also some new cars (buses, special equipment) In this version there will be a large assortment of new buildings + some universal animations of building construction. 
As a result, Path 1 is a calm and peaceful path of development.
2- (The way 2) Here I plan to add fewer new buildings and equipment ( about 35% less), but also add construction of buildings + car accidents, building fires, 
their extinguishing or collapse. Death of  people. 
As a result, path 2 is a peaceful path of development with less quantity of new elements, but with some incidents from everyday life.
3- (The way 3) Here add military equipment and soldiers, explosions, destruction from shelling or trampling. 2-3 monsters, which the brave city confronts. 
As a result, path 3 is a military, destructive path, either in confrontation with monsters, or in conflicts between the military.
There will be practically no new "peaceful" objects.
Which way, in your opinion, would be the most interesting and in demand? 
With respect to you and your suggestions and opinions, Konstantin.