To be honest, I'm not sure what you're talking about with those dates. What about Verbolten, Killarney, InvadR, etc.?
You said yourself that Twisted Timbers' theming is not super extensive, and it probably wasn't too costly for the park. Like you said, it's mostly just some little props scattered throughout the queue. And yet, it works. It tells a story. When I walk through Timbers' queue, I understand the ride's setting and my role in the story. Just from those few props and signs, I'm aware that I'm supposed to be touring the ruins of an orchard that was mysteriously destroyed.
The fact that Twisted Timbers' theme works, despite not having particularly expensive or in-depth theming, shows that parks
don't need to spend millions of dollars to theme a ride. Just a little bit of creativity is all that's necessary to spark guests' imaginations.
The problem is that Pantheon doesn't even try. Nothing to spark the imagination or to make the ride anything more than a hunk of steel with a ramshackle metal skeleton of a station. There is literally nothing.