i really love this game i like to think im the heartlings God. so i think it would be cool if the heartlings could also worship me and do my bidding.
you could make a new class:priest/prophet and instead of crafting things. You can make him say things witch will influence the way hearthlings interact with each other and their environment. For example: Making your priest very aggressive will boost their moral as soldiers, but maybe wont create a nice society. you can create speaking platform for the priest, where occasionally heartlings will listen. maybe you can make an alter where they can sacrifice things and communicate what they want. Answering these prayers will make them more devoted and thus listen to your priest more. Increasing the effects you want your priest to have. This will also give the hearthlings a more interesting live i think.
different kinds of priest:
War priest ( increases effectiveness of soldiers)
nature priest (increases the farming speed)
order priest (increases crafting speed and skill)
you can go on and on, maybe also give negative effects so choosing really matters.
I think religion can help you influence the hearthlings behavior and thus create a more dynamic relationship with your village. You can choose what kind of God you are.
i hope you like my idea, ( i already build a cathedral so now i need a reason for them to sit in it)