The BT app does more than people realize. A lot of folks that say it is very minimal have not used it in the last few years. It is still NOT Legacy but does more than some think that briefly used it or read about it at its release years ago.
I was amazed by how my Legacy models (newer 2019 and up) operated with the app. The bells and whistles you can adjust with the pitch option which can create the 5 different bells and whistles and can even create a quillable effect using the sliders on the app.
There are still a lot of optional sounds like brake noise, rail sounds, coupler slack etc. You just cannot activate them on command. They are there but just random which is what I prefer anyway.
I would love to experience a Legacy or DCS remote but if they are not making them anymore and the aftermarket value is insane I will rather not bother.
Brad