Here is a game I wish existed, but maybe already exists, so this could also go in the "recommend me a game" thread.
I'm looking for a game with a strong emphasis on base building/defense, but also on outside missions.
Think about a mix of the show The Walking Dead and the game This War of Mine.
The scenario doesn't really matter. Can be past-global war, past-zombie apocalypse, stranded on an alien planet, colonists on a new continent, whatever. I don't really care if it's medieval or in 2570, sci-fi or realistic.
I want to manage a band of survivors/refugees and their base. This War of Mine does this well, but I want it to be way deeper and more detailed. The ideal would be a construction system like Wurm Online. But I don't want to build everything manually by myself. The colonists would build on my blueprint.
Interaction with the outside world should be equally important. Ideally I'd like to prepare my parties to go outside and interact with the world. Can be scavenging in abandoned locations, combat missions, exploration, interaction with other communities.
The thing is, I want an open world. I don't want a map with fixed locations like This War of Mine.
Open world (thinking of bethesda games here) with an x-com zoomable view from above. When the party enters combat, it becomes turn-based.
So yeah, pretty much four games in one.