Fix the connection. That's it for me. I quit playing CoD because I was tired of being screwed over. I spend a majority of my time playing saying things like, "WTF, no way, how did that happen, etc." I want to know that I killed someone because I outplayed them, not that I had a better connection. Same for dying. If I get out played, cool, but when I die because of nothing other than connection issues... F*** that.
tl;dr - Fix the connection and I'll play again.