I got amalthea, cleopatra ak and nefertiti ak from NM. I was grinding that faction with 2 characters but after reaching rank 53 with one and 30 with the other and no ship or themisto, i decided to have only one toon with that faction. After all it's all RNG, so no need to have 2 on same faction. Best decision ever too, because thanks to that, i'm now one ship away from having everything from DO :)