Right now they are very useful. They would be better if their torso turn rate were faster so that they could keep their targets in site and keep firing. This would make them a lot better tho. It is a natural thing for the unit. Perhaps the improvement is not met to be because the units may become too strong, should they have such attributes.
One of the neat things about NOTA is that units do not automatically deal the dmg thy care designed to deal, there is a margin of error.