Introducing the Guilds!
Researching to level 3 (2 times in Research and Developments for new contents), you can build a Guild. When the players feel to create one (they should be happy and not at the first levels) they have the space to occupy (one guild for building!).
Each Guild will have its personal logo (some examples):
Look how players will join the guild and the word spread in the game!
An additional Analysis View is created to see the Guild Members on the map (is same button of the Happiness view, which is now Analysis view).
Thanks to the suggestions on the Community Hub