It is all a matter of needing a lot more equipment. The SWC reroute can be handled another way. Just run the SWC same route but have Coach(s), lounge, and a sleeper go on the shorter route and split combine train back at split points. Newton and Albuquerque higher speed route will get both Amarillo and Wichita. Shorter route via Amarillo would arrive at ABQ and Newton 95% (?) of time before the Raton route would.
Only problem at ABQ is the wrong direction for Amarillo train.
How is the direction at ABQ even an issue if you are splitting and joining the train there? Would you not just have the Amarillo section reverse direction at ABQ? I guess the locomotive would have to turn around on the wye...
You could do that, but the Amarillo section would then continue its journey with people in coach riding backwards. Lots of people do not like riding backwards, escpecially the ones from Wichita, Amaraillo and burgs in between.
Huh. And yet people pay big bucks to ride backwards in sleepers. It puzzles me because I personally just don't care much which way I face on a train, as long as I am next to a window.