The resource problem will be solved after they drop their equipment on death. Was already mentioned here (https://itch.io/t/308252/just-got-all-the-achievements).
And i don't think there should be something like "telling" them where to build something, because you play a god, not a villager,
so it should be natural that you can't control where they build. You can plan where to create your certain areas, so it won't happen.
I think, the prioritising thing is already implemented, because i often have the problem, that my metal furnance is ignored, because my ovens creating so many items,
and i'm stucked here xD but it's still ok i think.