Since Moji is constantly firing, you can land a free 600 damage from counter, and you can cleanse magic marks with billow then whirl away to poke from a distance
You can burst her down very quickly. If she uses shadow travel, you can try to follow her and finish her off. But don't overextend, since she might get some help by a teammate
Maeve is probably the safest pick against Raum, cause its hard for him to hit you. He also has high damage-falloff, you don't, so you can use that to your advantage and keep your distance.
If you see a khan going Commanders grab, switch to Treacherous ground (Warder's field) because when you place it down he wont be able to grab you, and if he uses it to get into point, as long as youre in Warder's field he will be stopped.