The one thing that keeps me using Compass and that isn’t mentioned in the article is plugins or extensions like Modular Scale.
Things like Susy and Breakpoint have moved away from Compass as a dependency, which is great. But there are still a few out there that require Compass, and even ones that can be used Sass only don’t always have all of the same features as the Compass version.
Modular scale is faster and can only use non-integer values with Compass, for example.