Dansk is has issues with consistency and can go from having very good games to imploding. Has he turned things around in Sweden? I'm not sure, but he's making progress.
He's never been the type of goalie who can steal games and carry a bad team on his back on a consistent basis. He had a handful of games like that for Erie during his first year, but they was few and far between. His first few games for Rögle were excellent, but not amazing, close losses.
Can a goalie make it to the NHL being sort of adequate? Maybe McBackup is proof that you can, but I don't think it's with Columbus.
Technique-wise, Dansk has a high level of knowledge of skill. Remember when he stayed in the main camp longer than the other goalies last season to help Bob learn the Reverse-VH post-integration tactic.
Dansk has worked with all sorts of goalie coaches to learn all the advanced techniques and can't actually implement these techniques in actual games in a way that's successful. Maybe eventually he might put everything together. Or he might retire and become a goalie coach.