Yep, I've got another suggestion. It would be very useful if you could press a button while looking at a workstation to reset it to its original position.
Also, it would be nice if when moving the smelter, whatever items were in the smelter at that time would be put into a special 'delivery crate' sort of thing that would appear where delivery crates normally do (one crate for each section of the smelter, with the items put into their respective crate, and each crate labeled with the compartment it came from). The crate should be small enough to fit into the fuel compartment or the ore smelting compartment, depending on which compartment's items the crate contains. It should also spawn any firewood horizontally when the crate is opened, since spawning it vertically would cause it to get stuck. It would be even better if a message were to come up telling the player that the items have been put into a crate and moved to the delivery crate location. This would be super helpful for when you move your smelter to an entirely different place and you don't want the materials inside to stay where they were before. This would also be useful if you somehow manage to get the smelter stuck somewhere, and you don't want the items inside getting stuck too.