Yeah, I really wasn't sure if S'Yan was supposed to be dead or just injured. The family is small as hell, they really can't afford to have any one of them die. And if he's dead, what's really the point of his death? We haven't seen the man since Hudlin's last few issues and the first time we do, he's killed. What a waste of a perfectly good character. W'Kabi, Zuri, and now S'Yan. By the end of Doomwar, there won't be anyone left. Hell, there are too few African characters to be killing them off without a second thought.
Back to the nanites. If they were in the food and water supply, how is it that the DW and Zawari and his crew weren't affected? I know many people think the nanites were a stroke of genius, but I really disagree and the explanation provided was weak as dish water. Taken to its logical conclusion, there should've been no place and noone not infected, including T'Challa and Shuri.
Side note, Doom is a serious peeping Tom, rivaling the sexually deviant janitor or security guard who drills holes in the women's bathroom to take a peek (LOL).