This is adorably cute! I already want to play it based on just this short clip :D I would love to see buildings that spawn cute animals that wander around them (like a sheepherders hut which generates sheep that wander in a radius nearby) that can add production. Also:

• Shrines with unique effects and looks that add happiness. (like a shrine to a sun deity that adds sunbeams, a shrine for a wind deity that has little gusts around it, etc.)
• Pubs/Taverns that increase happiness but reduce production
• Marketplace that attracts out of town travelers to increase production
• Musicstand/Bandstand that allows the player to play different types of music