Hey, nice to see you made it over here Runefang! I've tried to get some people from the warhammer forum, but I've only got about 5 so far.
As far as the list goes, I personally think you have too much points tied up in characters(910pts). If your not willing to drop the hearld I suggest you drop the LoC and pick up a daemon prince or an exalted instead. With the points you save I would invest in another unit of horrors with a champion.
Do you find the hearld effective at all? I personally believe the hearld is the worst character choice for tzeentch daemons(it is almost a must in other daemon armies though). Seems like a pretty easy target for enemy missles and magic, although you do have lots of targets to choose from.
What is your experience with changebringers? I personally find chariots more effective, but don't have too much experience with changebringers.
Also do you have a pic of the hearld model? It'd be interesting to see.
Time of Madness
***EDIT*** Just noticed the pic of your hearld in the gallary! very nice!
The lions sing and the hills take flight.
The moon by day, and the sun by night.
Blind woman, deaf man, jackdaw fool.
Let the Lord of Chaos rule.
- Robert Jordan