As noted in the title, there should be an option to stop players from instantly removing an entire train and putting it in their inventories, as well as storing a complete locomotive or car in item form at all.

This would be useful for a number of things. It would prevent easy theft of rolling stock, require players to use more realistic maneuvers (i.e. moving along the track rather than picking up a train and putting it elsewhere) to arrange and deploy trains, and require players to build proper facilities to house locomotives rather than just putting them in a chest.

It should also be more difficult to use the wrench to get around this. One way to do this would be to have a limited chance with each wrench action to successfully remove the part, simulating the difficulty in taking a locomotive apart (as this does take quite a lot of time in real life). This chance would be determined by the size of the parts in the same way default material costs are calculated. So a Big Boy would take a very long time to dismantle with the wrench, but the handcar could be taken apart very quickly.