Soldiers need options and the Army needs talent. Reintroducing senior specialist ranks to the force accomplishes both.
In the Army, we have have talented officers and weak ones. The same is true for the corps of noncommissioned officers. But unlike officer career paths, sergeants come into the service as a follower to develop and eventually earn their NCO stripes and supervisory roles over other troops. Regardless of ambitions and abilities, sergeants assume leadership jobs after a period of time, reenlistments, promotion boards, combat experience, schooling, and promotion point accrual.