The EIT is an imperfect solution at best.
Trainz is crying out for something along the lines of the old MSTS Activity Editor or the more contemporary version in Open Rails. That even allows you to specify what an inward working forms on departure.
The TSC editor also lets you set up a timetabled run.
TSW is of course locked down but however the system works a complete timetable for the whole day of operations, including complex shunting moves, is usually included. Again trains either exit or enter via portals or remain on the route to form next workings.
This should be integrated in Trainz as part of its core functionality and in as easy as possible means for the end user to work with.
It also goes without saying this should be accompanied by full autonomous signaller/despatcher, as the other oft requested feature - let's get rid of the player having to fathom out and set the route ahead of their train.
Even Run 8 now has "Otto" the AI despatcher, so if a small essentially part time developer can do it, surely a software house like N3V has the resources and capability to do so. When you're charging £55 for your next iteration of the programme, it's time to bring something new to the table.