I understand your point, and in part I also agree. Problably this route (in real life) its not the most brilliant LGV section in fact of traffic experience. Probably, because I just seen that on some Youtube videos. But I suppose we are not traveling all the time at 300+ km/h, also because the 2 main stations are not built inside the LGV line (like happen for example for the Shinkansen railways where all the shinkansen stations are build inside the line) so we have to entering and leaving from the LGV and join the "traditional" railway to reach the main stations. Thats a bit different from the "mid-highspeed" sections between Köln-Düren and München Passing-Augsburg. I mean like structure for a modern high speed route (well protected/isolated from the boundary dangers like animal crossing, that the reason we run in a sort of permanent viaduct or rift). The gateway between the traditional railways and the LGV here are more "marked", like when driving our cars we left the traditional road to join (via ramp) the highway. I dont know if in real life Intercity and freight trains can potentially run over the LGV lines, at today. In the next years for sure. I looking forward for an add-on pack with the old TGV version, the first "Orange" Mediterranée.