The biggest issue with using existing buildings is that we don’t know what is there. It would be easy to add “recapturing building X” mission but it presents tons of issues that are solvable but would probably be more of a pain than they are worth. Spending a week making a program that has a 75% of putting furniture in an acceptable place in any given room seems boring to me so I doubt I’ll ever deal with it. Otherwise we’d have to program for how to capture each structure specifically… which seems even worse if there are more than four or five.
Current plan is to have lots of missions that target OM tiles for deconstruction (forests, buildings, rubble) to yield specific resources. The 9 tile base can be modified to no end since I know exactly what those 9 tiles should hold, adding a palisade perimeter wall around the entire fort will 100% be possible in the future if that is a path we choose to go down but you’d be coughing up resources for 288 ish palisade tiles ( 864 logs, 48 man hour/days, ~115200 kcal). Sounds crazy but that’s feasible, 3 level 4 carpenters working for a season.
Designating your own constructions and having the NPCs build them for you is far on the back-burner for now, at least for me. After first PR lands its open season if anyone wants to add additional quests/missions to the camp system.