The police station set came to us in 2021 and it has not been long before we can already find for it some alternative models and extensions.
The set 10278 contains 2924 parts and among them you will also find some new parts like 70681 and 38585 and it is certainly possible to build particularly beautiful models with them.
So as always is a number of models I have found for you:
Alternative build #2
Lego Police Department Modular Building Fully MOCed
LEGO POLICE STATION Expansion
Rebrickable Lego set 10278 alternate build: https://rebrickable.com/sets/10278-1/police-station/?inventory=1#alt_builds