I think implementing a photo mode would be really fun, and give the characters in your community a little more life. You can use the general ideas from other games, with poses, and filters and all that. You could also make it to where photos you take, can be selected to decorate your base as posters (Like in XCOM 2). Adding something like this would also be good for people like me who enjoy being able to take cool screenshots of games and put them up online for people to see. I think a lot of people would enjoy having that method of photography in the game.