the route via Rotherham central and Doncaster plus the route bypassing Rotherham central for high speed trains for TSW2. Also playing this game on a flat monitor really does it no justice would be great on VR or at least do a Steam beta option for your customer base to try it out and have the option to play it on VR if they want to would be better than putting out many DLC's that not everyone can afford every month
Very few trains between Leeds and Sheffield run via Doncaster and even less, if any run via Rotherham too. What you're really asking for is two separate routes; Leeds-Doncaster and Sheffield-Doncaster. I would support both coming into the game, but realistically you aren't going to get both!