Interesting choice. I liked him as the bad guy in M:I2, and now he has a good weathered sort of face for the role. I can't imagine he'll keep his accent.
I'm looking at pictures of him from around that time, and to me he looks similar enough to Rose to plausibly be a relative. That's certainly not a requirement for these sorts of castings, but it's neat when it happens. I wonder if that means they'll try to cast Gabi with someone who more closely resembles Skarsten.