About I am recommending the section between Gold Bar - Wenatchee, lengh would be about 95 miles (153 km), This line would also contain the longest rail tunnel in the US that being the Cascade Tunnel. Rollingstock GE C44-9W ES44DC ES44AC ES44C4 ET44C4 EMD GP38-2 GP50 SD70MAC SD70ACe SD75I
Absolutely! This is a must-have route for me! The BNSF SD75s are often used for heavy manifest freights out of Seattle, WA, so those could be included. I'd still love the ET44C4, C44-9W, AC4400CW, SD60M-3, GP50/GP25, GP39-3 (rebuilt ex-BN GP39E/M/V which are formerly GP30s/GP35s), and/or GP60/GP60M(-3)/GP60B. As for Amtrak, the Empire Builder runs on this line, so we could get a P42DC, or my preferred Amtrak loco: the ALC-42 Charger, along with Amtrak Superliner Cars and a baggage car. BNSF also runs a unique operation on this line: their awesome Wichita, KS-Renton, WA Boeing Fuselage Trains, which should totally be included (they are included in the TS Classic version of this route). Other rolling stock would include grain, autorack, intermodal, coal, and oil trains, plus manifests and locals.