I wish that I could get excited about Calix, but I really can't. To me he was just a throw away character created for Hordak to kill. He made Hordak look pretty cruel and merciless, which was cool, but as a character on his own he just wasn't very interesting. He's a rock guy who gets reduced to rubble. The Horde wraiths were more interesting to me really.
If another Horde member is coming I would love it to be Mantenna or Dragstor, or for the crossbow to be part of the Horde Troopers. I'm really not interested in Buzzsaw Hordak at all.
Ah well I guess we'll find out. In February, lol.