I think it would be great to be able to manually assign a specific deposit spot for masons to gather. That way you could micromanage so the mason finish of a deposit spot instead of leaving it at <20 or so to go to a closer spot. It could even be automatic if you like, so the mason always finish a deposit with low amount of resource, at least if it's not far from the other. Would make it easier to manage masons, while still not making it too easy (the automatic solution might be too easy).