A simple suggestion The implementation of SDO into tsw . This would be especially useful on the Harlem line and on lots of British locos .
This should be useful for existing British route Long Island Rail Road and Metro-North. This will be very helpful on East to switch because you have 05:15 Seaford to Brighton trips that are 8 carriages of Class 377/4 on some stops you only open the first 4 carriages.
A system that means that when stopped at stations , passengers have to open the doors instead of all the doors opening . It also allows for certain doors to be blocked in the case of a short platform