I like the trains for Steel Curtain! They're really committed to that Steelers theme, but more than that, the restraints look minimal and open for such a massive looper. I think they look more appealing than both the Dodonpa/Gale Force and four-across thrust air coaster restraints.
I'm not wild about inversion-heavy coasters anymore, but I want this to be a solid ride for the park. The trains give me confidence.