TL;DR
In the turrets config window, add a combo box/set of buttons that allow the user to select it's priority target, making it easier/more effective to use multiple turret types.What ?
Instead of the turret just firing at the first target that enters its range, let the player (or a logistic network circuit) select which target it should select, when more than one is within range:- Nearest
- Strongest
- Weakest
- Farthest