Of course at the same time, I'd like to see eliminated Amtrak long distance routes have service once again. I.e. Pioneer through places like Boise, Desert Wind through Las Vegas and etc(not sure why at the bare minimum there isn't a Vegas-LA corridor train already), have some sort of train run once again through southern Wyoming(whether that's a new Pioneer train covering southern Wyoming along I-80, or another train), a restored North Coast Hiawatha(through Missoula, Bozeman, Billings, Bismarck, etc), a restored Floridan(through Louisville, Nashville, Birmingham, Dothan, Jacksonville, etc), a restored National Limited(through KC, StL, Indy, Dayton, Columbus, Wheeling, Pittsburgh, and east to NYC like the original one), to name examples. I do wonder if the tracks remain for each of those former long distance routes for such train service to resume, along with of course that negotiations would have to occur with freight railroads for service to begin again.
Thanks for correcting me, there. Forgot that Wheeling wasn't directly served by the National Limited, but that it went via Weirton instead! And too bad the 'Panhandle Line' that went through Weirton, is now gone today.
Ok I think I'm qualified to talk about what routes are still around seeing I've either worked excursions on them, or have done a lot of research on these routes because of my 1952 Official Guide of Railways Map. Currently there is a mixture of shortlines that run the former Panhandle line of the Pennsylvania Railroad.
Pittsburgh-Wierton/Stubenville is abandoned. However one can get from Pittsburgh to Mingo Junction on an active line of the Wheeling & Lake Erie Railroad. However if you keep on the W&LE line which is the EX Pittsburgh & West Virginia line you can continue onto Jewett, OH where you get on the EX Pennsylvania Railroad Panhandle Line.
Jewett, OH-Columbus, OH. Is an active shortline the Columbus & Ohio River Railroad which is a G&W property. This line is active all the way into Columbus, and hosts excursion trains out of Denison around Christmas time.
Columbus, OH-London, OH is the EX Pennsylvania Panhandle Route now operated by Norfolk Southern, and is an active mainline.
London, OH-Dayton, OH is the EX New York Central "Big Four" line that ran from Cleveland-Cincinnati at one point. This route services Springfield, OH instead of the Pennsylvania's route across rural middle of nowhere.
Dayton, OH-Indianapolis, IN of the old Panhandle is abandoned in places, and a mainline in others. Eaton, OH-New Castle, IN is still an active line. However this abandoned makes things substantially more difficult because in order to head west you must drop down to Cincinnati, OH. Which is great because it provides a second train to a major city. However to be pointed to depart the right direction you will have to wye the train and double back to Hamilton, OH. Then take the Cardinal's current route to Indianapolis, IN.
Indianapolis, IN-Terre Haute, IN of the old Pennsylvania Panhandle is abandoned. With the exception of short segment the Cardinal uses to get on the line to Chicago the Panhandle is abandoned. So we would have to detour the train onto the former New York Central (Big Four Route) line. Which for the most part runs within a few miles of the EX Pennsylvania. The current CSX St. Louis Subdivision
Terre Haute, IN-St. Louis, MO of the old Pennsylvania Panhandle line is very active. It's the CSX St. Louis Subdivision. Back in Conrail days they abandoned sections that were parallel to each other. The New York Central line is still active in places however.
Fun fact that is the EX New York Central "Happy Valley" 10/6 Sleeper. This car was on the final eastbound 20th Century Limited.
I would also add the Texas Chief, Southerner, Southern Belle (extended to MSP) and an Atlanta or Charlotte to Florida line to that as well.
The Southern Railway "Southerner" still basically exists. That's the route the Crescent follows today. You are probably thinking of the "Crescent Limited" which Southern ran with the Atlanta & West Point, Western Railroad of Alabama, and the Louisville & Nashville. That train ran via Montgomery and Mobile.
The Texas Chief there is a push I believe recently to restart service on bits of that route. Already the Texas Eagle takes parts of it's former route, and the Heartland Flyer uses it as well. If they are successful in pushing the Heartland Flyer north they will succeed in basically getting that route back.
The Southern Belle's route is completely intact and still used by the Kansas City Southern. It's a hot stretch of railroad. As far as pushing it north to St. Paul you are thinking in terms of the former Rock Island "Twin Star Rocket". That route actually still exists completely in the hands of Union Pacific. I have no idea what the speed, or traffic situation is though.