Did you meet them or was there something specific they did? I fucking love them, but I'm sure they've crossed the line more than a few times during their incredible career.
I mixed 'em! Jesus Christ Superstars tour. They had a tech rider that demanded 80 par 64s gelled the same color of red. Apparently they wanted to look like rotisserie chickens. We rented them eight Intellabeams (at a time when they were $1k a day each) and they were cranky about it. Then I asked the lead singer (who already knew I was mixing his monitors that night) to sign my copy of JCS and he said "I have a stamp for that and it's back in the green room. Sorry." Then they had us put up 4 fake vocal lines, 8 fake keyboard lines and 3 fake guitar lines. Yeah. Laibach "live?" Drums and the lead singer. Everything else is Memorex. On the plus side, the Intellabeams looked dope. At least their lighting designer was cool.