Dragline Excavators
i think game need this type of excavators, and they can be added in 2 wariants smaler bigger or even as building, they give us new option to extraction of gold iron copper and more even if we just by mistake flood area this excavators give us option to to get resources from this area without filing it. they dont need ramps only limitation is rope lenght. they are not cheap but possibilities of use them are good to add to game.