It is probably no surprise that Nyx was originally intended as a Malkavian replacement as he is based on the original Malkavian Model. I like Malkavians because they offer a nice combination of powers. But the original Malkavian that came with the game was too loud for my tastes. It broke immersion and the loud colors broke the ambiance of the game. There are different kinds of crazy, not all of them have to manifest physically. Nyx could also work as a Brujah or Gangrel.