playing this now and got several nasty surprises. why the hell can water pumps not be deconstructed? also, power lines? if you want to keep the game really hard, ok but at least give some kind of description or warning about the types of building that can and cannot be deconstructed.
another interesting option would be to be able to pause operations of a building to free up some of the workforce without deconstructing the thing entirely. though this would make the start significantly easier, which might not be wanted.