Welcome to the forum. Unfortunately due to licencing this is highly unlikely to be added to the game, also we know what trains are coming with BML and this is not one of them Ps. when you make a suggestion add more detail rather than just a title and picture, have a look at other suggestions and you'll see what other people do
While this is unlikely to be added at the present time, when the GTR franchise ends next year, depending on the operator that takes over, this might come to TSW