I can just picture Severus thinking/saying that.  I prefer AU to cannon anyhow.  J.K.R.'s killing spree in book seven left a bitter taste in my mouth!

I really love this story. From Regulus' letter to Snape's response, you have let the reader feel the darkness of the time frame. I look forward to seeing where this goes.

I like this, the idea of Regulus helping Snape, wanting to protect him, knowing his value to the cause. It makes me wonder what kind of relationship, if any, they could have had. Until now, I've never seen anyone explore the idea. Good job!