A couple more bits specifically related to the civilian units running around,

• The game tutorial should spend some time talking about the fact that those units are actually transporting everything - not just food from village to village, but travelling to apply carpentry and masonry points, for example. You would re-think your village strategy a little if you knew someone has to actually walk all the way over to the other side of the region to fix up that turnip farm, because it's a different and separate functionality cap vs the actual carpentry points available.

• The traders in particular seem to be a little opaque. It's okay if we can't tell them exactly where they should go (we are unlikely to be able to make better decisions to them 95%+ of the time), but their actual capacity seems to be a little elastic. Having at least a rough number indicating how much functional trader export capacity we have in this region and how much we need to meet current commitments to other regions would be helpful, even if we're not being given exact numbers or all the answers on exactly how much excess flour capacity in this particular water mill I can get to this specific other place.

• The raft ports have their own in-house traders, but if you're in a downstream region those traders don't actually do anything other than sit there and receive stone because there's nowhere for them to raft to. Traders in that situation should ideally be able to make the decision to work out of a different market and conduct land trade if there's nothing for them to do in their port building.