This feature request would allow you to take your smelter with you in your inventory and place it down where you need it. Instead of having the need to build a compound when you need to smelt by a mine at a distant location. It eliminates the need of building multiple compounds.
(Example: You could carry your kettle with you in the same way in Tale 1.)
The benefits of this petition as follows:
Reduces the amount of compounds needed just for smelting while mining. Therefore reducing lag for graphics to load.