I often try to help out new players with fit’s in the Rookie Help channel and get frustrated by not being able to add Mobile Tractor Unit’s Or Mobile Depot’s in the fit in the cargo bay, I would love this option to be implemented
MTU isn’t technically apart of a ship, or attached to a ship. They are essentially cargo containers. I believe thats why it’s not apart of the actual ship fitting. Unlike ammo, launchers etc.
But it is already implemented. Drag-drop the MTU over the “Cargo hold” you’ve highlighted in your picture and it gets added to it in the fitting simulator.
It does save it, but the Mtu and mobile depot are expelled from the fit, and I think it’s because they are containers. Hadn’t tested that with other containers.