With this suggestion, which is on the edge of Germany, I propose to go along with this iconic route with its open landscape. The best thing about it would be Fehmarn are, an island called in Germany with a special harbor located on the Baltic Sea coast. Bringing this back to 2010 or a little earlier where the AI boat sails can provide something new again. Hence the V200 Diesel locomotive for this route and perhaps the BR 628 as a second train. The future BR 232 of TSG can also contribute to this as the 218. Just like the other German routes, this one should be the same length in distance, although it is not so easy to find the distance in kilometers, you can see below that an average train ride should be under 2 hours, about an hour and a half.
Bring It On since it's a requested route. You can ask something like OldVern who has done the route in the 1980s because this is the final Continental section of D231/D232 Holland Skandinavien express. Layers 363 Nahverkehr Dresden 365 Niddertalbahn inside Eisenbahnfahre Puttgarden terminal since you need to use them to get trains on and off the ferry. NMBS might have a Brussel Zuid coach to Copenhagen attached to this train.
so it's not really the best suggestion This one was also just one to make' I thought it was different. If the Developers really went more extensive, I would still stick to my pride Belgium, a nice suggestion or the great suggestion you made Aachen-Liège comes in also one to strive for..
Yes please. Did the rail ferry crossing several times, mostly with classic UIC (uncomfortable!) stock on the Holland to Denmark and vv D trains. Then once with the “white worm” DSB DMU.