Describe the Suggestion

Currently, when assembling a train, there is a readout which tells you the number of bogies on a train, along the lines of 'X Bogeys'. There is also a 'hard' limit on the number of bogies a train can have, configured outside of play, with the default being 20. With the defaults, if you assemble a train with more than 20 bogies, the train will only assemble the first 20. If that 20th bogie happens on one end of a train car, with the other being the 21st, the assembly will fail with 'Bogeys are not connected in order'

My suggestion is that, instead of the readout being 'X bogeys', it was instead 'N / X Bogies'. X would remain as the number of bogies available to assemble, and subject to the 'hard' limit, but N would be editable, settable between 1 and X and defaulting to X to replicate the current behavior. In essence, this would supplement the current 'hard' limit, one which is set for an entire game, with a 'soft' limit, which would be set every time a train is to be constructed.

When assembling, it would act similarly to the hard limit currently imposed - it would only assemble the first N bogies, and if the Nth bogie was part of a train car which went beyond N, it would throw the 'not connected in order' error. However, unlike the current limit, it could be edited at the station control every time a train is to be assembled, and such an error could be solved by excluding (or including if possible) an extra bogie.

Screenshots and Videos

A doctored screenshot, showing what the interface could look like

Additional Context

This could allow a rudimentary form of shunting. Currently, the only way to limit the number of cars a train will have is to break the track between the cars you want and don't want. This limit could provide a more elegant solution. Detaching cars from a train would simply be a matter of pulling up to a station, disassembling, reassembling with a smaller limit, and driving the shorter consist away. Attaching cars would be similarly easy - reverse then pull up to a station on a track with to-be-assembled railcars waiting, disassemble, reassemble, and drive off with a larger set. It would be entirely manual, cumbersome and somewhat impractical, but possible.