Yeah...I think I'm in favor of putting a rail line through one of those routes. Honestly, even if it was constrained to lower-speed running for a fair section of the route (and let's be honest, does anyone expect to see a train cracking 200 MPH through those mountains in this world?
Yes
Really? (No, that's a serious question) Even with some of the better plans out there, you tend to get mountain ranges, river crossings, and urban areas where trains have to slow down because rivers, etc. don't necessarily follow high-speed alignments. For example, IIRC the bullet trains out in Japan mainly stuck to either coastal plains or to convenient valleys and so forth for the most part (rather than trying to blast through mountains). Some of the other lines are "just" upgrades of existing lines rather than full new alignments. I know you can shave off some "bad corners" with a bit of dynamite, but how much are they seriously looking at putting into getting a train running over 200 MPH over the mountains themselves?