They've never played LANXESS arena, which is kind of strange, given it's one of the biggest arenas in NRW or Germany in general.
But I'm very pleased with Dortmund. Historical arena and only 40 minute drive.
Caught somewhere in Time
Days of future past
Death of the Celts
Stranger in a strange Land
2 Minutes to Midnight
Heaven Can wait
Hell on Earth
Fear of the Dark
Alexander the Great
Megadeth in 99..
However Sabaton got really huge from 13' til now.
Don't see it. Helloween, Gamma Ray might be possibilities. Would welcome Powerwolf as well
Or as mentioned, any band with a kid from the crew in it.