I almost expected him to suggest that Taylor take the other batch of the potion. She is not a brute and her spider silk suit will only be able to protect her so much, it would be greatly increased if she herself was stronger.
As to the Nazis, I'm sure that there are many ways that they could get rid of those problems without it being noticed. Just having Taylor's bugs move some of his potions into Krieg's office/home and burn it to the ground, plant evidence, spy on them, the list of things are endless and Taylor could be blocks away. Having their cars/trucks/etc. develop problems with hoses being damaged, mud being moved into the intakes, all without leaving a single insect behind to give a clue, it would bleed them dry. This is all before the big guns are brought in, because they can drop a lot more on them by surprise.
As to the Nazis, I'm sure that there are many ways that they could get rid of those problems without it being noticed. Just having Taylor's bugs move some of his potions into Krieg's office/home and burn it to the ground, plant evidence, spy on them, the list of things are endless and Taylor could be blocks away. Having their cars/trucks/etc. develop problems with hoses being damaged, mud being moved into the intakes, all without leaving a single insect behind to give a clue, it would bleed them dry. This is all before the big guns are brought in, because they can drop a lot more on them by surprise.