Gotta be careful with mindfraggers around, because turrets will happily light them up…while they’re on your guy’s face.
If they were smart turrets, I would just turn them off with respect to shooting at mindfraggers. Too much risk.
My most frequent application was dropping them at choke points in alien nests to my rear. They would help manage ones that spawn behind me without dedicating personnel. I’ve stopped doing that, though, as I’ve found that if you just advance quickly enough the ones that spawn to the rear are irrelevant. They can’t advance to where they’re a threat before I can make it to the spawner and finish it (especially once my squad’s speed starts getting up there)