This exercise develops maximal strength in the core. When one posseses mobility restrictions, the front squat will force one into a better, mechanically sound position with good alignment of the ankles, knees, hips, and spine. Even though it's not back squats, it's still a great exercise for developing maximal strength as most athletes can Front Squat 80-85% of their 1 rep max in the Back Squat.
Kiley Staples of the U.S. Ski Team demonstrates how front squats keep her core strong.