Bot how train robbery will look? Encounter map with enemies and barricades?
I'm not developing Train robberies so I wouldn't be the one to decide what it looks like xD!
Barricades make the most sense, but it doesn't have to be static.
Like some encounters could have a still "moving" train with vehicles showing up on the map appearing to "move" drop off enemies then disappearing.
More variety is always better, but if this were implemented I would imagine most of the encounters would be of some kind of barricade possibly rows of broken cars on the tracks, of which the train might be shown in a crash. After which a caravan esque encounter would begin.
Turrents probably won't make a scene because I doubt Kilgore would implement that change for just this idea, unlike Fallout Tactics reloaded doesn't have moving vehicles.