Not really inefficient, just overlooked! A study was done by the army to see if there was anything out there that could meet the specs required for the army. They wanted something that had mobility, all-weather capability, and had at least an 8 km effective range. The ADATS was the ONLY anti-armour weapon on the planet that met all the specs and then some! I knew that this was true being an operator.
When we were on Resolute Warroir last spring, we were engaging an enemy armoured unit at 8.5 km. The combat team commanders were not amused! Here we were getting the Battle Group‘s recce info to our CP, then looking in the area, aquiring the targets, requesting permission to engage, and engaging all before the commanders could plan out their attack! How‘s that for efficientcy?