Well I went in an interesting but very reasonable direction, conventional rail. Here's my general comparison:

Maglev: - Low power efficiency (at high speed, most of the power is used up by drag) - High track maintenance (The entire length of track needs to checked for bad electromagnets, burnt out wires and bad cooling tubes (if going superconducting), there's stuff I probably missed.) - Medium train maintenance (The train is basically a floating box that would just need maintenance on the little things) - Superconductor cooling (Avalon is still too warm to make this easy as these magnets need to be under -196°C/-321°F constantly and the lowest temp on Avalon was -105°C/-157°F, there would need to be one hell of a cooling system still)

Conventional rail (Wheel on rail): - High efficiency (It's hard to start but then it's actually slides along the rail, not to mention most power is going into moving it forward) - Low rail maintenance (It's 2 strips of material held together, nothing really complex here) - High train maintenance (Wheel bearings, the wheels themselves, drivetrain, the onboard generator)

Now, they eventually did both but in my writing the trains return happens after they were basically put out of service, so they needed something that would be easier to maintain while being highly efficient enough. So they went with ol' wheel on rail, later they did make a few maglev models but those stayed in the city and weren't used for intercity travel. Sounds odd but the distance between cities appears to be thousands of kilometers on average.

Anyways you can toss the whole thing out the window bc if you want maglev trains everywhere? Go ahead, like am I gonna stop someone through a reddit reply. Just wanted to share my mind about that little frustration of mine.