First off, welcome to the new codex!
Getting to the list, I would prefer extra armor on the Rhino in place of a havoc launcher, and Daemonic Possession over a havoc launcher on the CLR - movement is better than firepower for transports. Not sure about the plasma pistol on the Berzerker champ, but to each their own. Likewise, I'd rather see a meltagun on the Raptors than a plasma pistol - much more useful from the same range, and you still keep your bolt pistol for close combat anyway. If there's a way to increase the size of the Raptors, do it, because 5 will not be very effective at this points level.
Don't know if you really need all the options on the Terminator squad, though they're useful, of course. If looking for points I might start trimming here. Also, as above, there's no real need for personal icons - you have no daemons, and I'm not sure you want to deep strike your Terminators or Obliterators either. Speaking of which, since you have the slots, it might be better to split them up into a group of 2 and a group of 1, for more versatility.
I like Bolt of Change - it has the same range as your bolters, and packs a punch. Doombolt can't hit at range like it can. More Rhinos would be good, though, for this and for the Marine squad, if you have them - one Rhino won't last very long, and all your squads have short-range weaponry. The Icon of Nurgle on that squad is quite pricy, so test it out and see if it's really worth so much, keeping in mind that you can get 3 marines and another flamer for its cost!