So, reviving this old thread because of this that appeared in the Winter Survey.... Seems like DTG has taken notice of those that have mentioned Railroader and Run 8 over the years....
Great if they can make it work properly, and it it can be implemented in a way that actually feels realistic. I'm just saying, I could easily see such a dynamic thing breaking easily, and I could also see DTG doing silly things like having random cars being assigned to equally random places. Drop off a container car at the hopper, pick up a boxcar of fruit at the local coal hopper, that sort of nonsense. Also, I find the fact it's "mode" off putting, like, this really should exist in the timetable in some form, not be its own thing entirely. I want dynamic events as much as the next guy, but if the way of doing that is by just gutting all the AI traffic entirely then I can't say I'm all that thrilled by that prospect.
I have a feeling that since they can't make a proper local train in a timetable, they're just going to turn roads into weird playgrounds with this. Pretty much impossible to have this work within a timetable, so you're in for a barren route.