Playing my Cmdr 10 Engineer today on Advanced, and when I beamed down to the raider base and had to face the heavy grenade turrets, I kid you not, ONE plasma grenade would wipe my entire away team. I spent most of my time rezzing my BOFFs instead of shooting the turrets. When I was able to finally start shooting, I couldn't shoot for long because, again, one plasma grenade would wipe us again. Since there were multiple plasma grenade turrets all clustered around in that one corner, well...needless to say, they need to be adjusted. They're way too powerful, even for Advanced.
It's a good thing Joshua Riker is invincible. And has fists of steel!