of course, as an engineer, you will be able to to choose skills that make your turrets more effective....and mines are the [censored].
I wonder what options there'll be for mines. I know you know this, but for those who don't: in ET:QW there were two types of mine trigger, and you could choose which type as you laid the mine: proximity, and trip. Trip mines would produce a visible laser beam which, if broken by an enemy, would cause the mine to explode immediately, but since they had that beam they were easy for foes to spot. Proximity mines would trigger when an enemy got near them (and had line of sight), but they wouldn't explode for about one second, so if he were sprinting from around a corner, he would usually not take enough damage to kill him. So I've got to wonder whether lights, as fast as they are, are going to be able to outrun prox mine explosions.
Of course, finding mine spots that avoid these inefficiencies is part of the challenge of the class. I'm looking forward to it.