A quick search didn’t result in anything similar. Sorry if repost. +1 for the church idea tho.
Hospitality, hotels, and tourism. Missing from the game imo. Easily could incorporate the parks/desirability, available goods to taxes generated ratio for extra income/overlays, and have the number of traders and or how long they stay dependent on the hotel you have available.
Plus these buildings should/could easily be the prettiest things in your town, besides maybe church, orrrr fairgrounds 
Something critical to pre twitter existence.
Thanks for a fun and pretty game devs.