Now this may sound weird but hear me out. So there are two timetables on the Bakerloo line, one with the 72 stock and one with the 38 stock. I think there should also be a third timetable that has both trains running. It would be cool to do rail tours/heritage unit runs in the 38 stock while being in the sea of modern equipment. This would give off the feel that the senarios give where you drive the 38 stock with ai 72 stock trains. It would also add variety to the route. I think the main reason this didn’t happen is because the timetable would probably have to be completely rewritten. But a loophole around this is to just use the 78 timetable, but have the 38 stock substitute in. I’m also posing this suggestion in the RIvet Games Forums since they made the 1938 stock
You hardly ever get to see other trains on the route so I don’t really see the point myself. The 38 stock can’t just substitute in on the original timetable as it would throw all the timings out with it being a slower train. It could possibly work the other way though with the 72 stock substituting on the 38 timetable as that might only result in longer dwell times at stations for the faster train and not jam up the timetable.