Really nice mod, but there are a few things I would like to comment on.
As a turret ranks up, the minimum range, if such is set, decreases. This can become a problem if you use this minimum range as a safety feature. As in not building any other defensive structures within this range. Then, when the min range goes down, your flamer turrets/cannon turrets etc start blowing holes in your walls. I understand that the min range can be a limitation as well, but altering it can also be a problem and prevents you from using explosives in your turrets.
Also, any upgraded turrets are not recognized by the logistic systems, I am unable to make requests for them, either for myself or any type of logistics box. Construction of ghosts works, but other than that, they are essentially lost in the logistic systems.