My only complaint for Arrow was when they were saying their special features would be in 1080P and then they were not which caused compatibility issues for some Region 1 players. Tenebre was a release that was like this.
But they don't seem to have anything region-free anymore. I'd love to have their releases of Spider Baby, Black Sunday and Black Sabbath.
I also liked their old covers. It was cool to have 4 options to choose from.