I still run nightsisters. I've never been top 20. But top 50? Regular for the past 4+ months since revan started and still while he is sitting on his throne. The only thing holding me back is speed; it's hard to win when the opponent can take two or three turns before you get one, etc. The kill order is essential as previously mentioned. He really isnt that hard of a kill though. It's just a slugfest. That's about it. Yes my NS are all g12 and 230+ speed before leader bonus. I built then for hstr, tw, ga, tb and arena. They are still viable and useful elsewhere and definitely worth the investment! They also LOVE those delicious CLS/finn comps.