A few things: 1. In the real world, on the LIRR sector of the route (as opposed to the Amtrak controlled section), all line speed changes are posted with diamond shaped yellow signs. Same deal with whistle boards and level crossings. Would absolutely LOVE to see that implemented. 2. Service AI horn blowing at level crossings, tunnel entrances/exits. 3. I've heard that during the development of the Class 377 and the East Coastway DLC. a dot matrix system was created. I would love that system to be used in the passenger notice boards on the side of the M7 trains.