I recommend that the service mode selection menu should show a briefing of key aspects of the train that the service relates too, such as train weight, number of carriages, train length, and total horsepower. As a player, I often find myself scrolling through the service timetable of a route looking for a specific experience, such as a really heavy freight train. Currently there's no way to find such a specific service other than to load each service one by one and look at the briefing window that appears when it loads, I feel that this could be streamlined by putting the information on that window onto the service timetable in some fashion.
It would also be cool if we could be able to see how many medals you need to get a gold medal just like scenarios.
That's a really good suggestion. I often struggle to find specific consists (e.g. a 8-car 375 on SEHS), and since having that as a sort of livery option was removed, seeing this information in the selection menu would be a nice workaround.