I would love to see some kind of technology that would create a virtual yard master/dispatcher/whatever so I can play better by myself.
In the same digital vein, more details on the locomotive would be cool like water, sand, boiler pressure maybe, fuel, etc. Details on freight would be cool but I know that requires a second sensor to determine when you're at your destination.
Basically I think the digital element interacting with the outside world would be awesome. Some people are into running trains on a loop and that's excellent. I was always more of a purpose-driven operator. I want to do stuff with my trains. I think modern electronics could grow that end of the hobby a lot.
Shrinking electronics would be nice but I assume there must be a limitation here, otherwise it would be done.
I've seen some really great suggestions in this thread. I hope the manufacturers see it and head to the drawing board!
