Severus looked highly amused. "For Draco, admiring the perfection of his heir would be an entirely valid reason. I warn you that once the child is born, we will all be expected to do just that." He sobered. "However yes, his true value lies in the fact that Rodolphus and Bellatrix still talk to him as does his father."
He arched an eyebrow. "We are more likely to be discovered by a vampire or a werewolf so I would hold off on the idea of using physical violence." He paused for a moment. "Though if we could possibly manage to time this for the either the new moon or the full moon, we might be able to neutralise the werewolves at the very least."
He tought for a moment, his fingers tapping a slightly syncopated rhythm on the desk. "Theft is not quite the same thing. Theft is, by its very nature, quick. You steal, you leave. I am talking about sustained stealth." He arched an eyebrow. "But a test could easily be set up if you're interested. Not in the castle though, that would hardly match the circumstances... perhaps the Forest. If you can extend the skills you used for theft to a more extended scenario then you may well be of some use."
He snorted. "Let us see how easy it is to infuse the appropriate runes or charms into the stones or whatever else we choose to use. If it is runes then I will insist that you come. My own ability with them is limited and I would not be able to adjust them if needed. Charms, I am more than capable of handling."
Severus arched an eyebrow and smirked. "I quite enjoy combining Draco and kissing. I enjoy combining Draco and many things."
He shrugged. "Turning my back on the Muggle world annoyed my father, something I enjoyed immensely when I was younger. And once I was Sorted into Slytherin, there was little incentive to admit that I was a halfblood, let alone that my father was a Muggle. I will let you handle that side of things." He waved a hand. "I offered Aberforth as a possibility if needed. Although he is in the Order, he is fairly independent, especially when it comes to his side businesses. Use him or not as you wish."