I usually actually switch out of Tor when I see that the enemy team knows how to handle with the turret, its not worth the hassle of setting it up again and it being blown up easily and then im half a character.
and speaking of healers, nothing as frustrating as being a healer, and feeling like you arent doing anything. Either a particular good widow keeps sniping you before you matter, your team is all over the place, you simply feel useless (this happens mostly in those final push moments when teams are entrenched) but then if you switch to a dps or something, people cry for heals, even tho you arnt doing much healing anyway, and if you are, people are still getting deleted.