Well mosques/temples/etc also existed in that era. I’m sure everyone shocked we didn’t add churches would be just as satisfied by the addition of those instead, right?
We’ve intentionally left faith ambiguous in frontier, even if churches are a “staple” of medieval Europe, which is another thing we’ve deliberately left vague. The setting for the game is inspired by certain time periods and places, but it is not set in those places. The player can decide whatever suits them.
I’m not sure what our approach to religious buildings will be as they are not a priority right now. If we ever incorporate a faith system of some kind, I think it would be best if it was a customizable system where you name the faith and decide its bonuses/features. There’s way too much baggage and drama around real world religions.
As for docks/bridges, water gameplay is actually a lot more complicated than you’d think in our setup. It’s something we’ve experimented with during development but ultimately decided to shelf for the time-being.
It’s a mechanic we will likely revisit, but it may have to be some kind of water-themed DLC as the tech and features necessary would be a major undertaking that’s not likely to fit the timeframe for the base game.