Well i think that lights weakness is a psicological one, I mean not dying is OP but that has concecuences, for example if she is too laid back about it, that will put us in danger( the crew) and Griff for one won't stand it, imagine this, we face of against Marines, if light just ups and rushes in without caution and is splatered all over the place, now we would have to take care of her, putting us in danger. So she'd be hesitant, i think about how to fight