Tzeentch Daemons "Spawn-Maker" Army List

A while ago, I posted some thoughts on whether Soul Devourer or Boon of Mutation was a better deterrent against opposing armies.  Today, I want to take that thought to an extreme conclusion and suggest a 1500 points army list of Tzeentch daemons that is based around the ability to turn enemy models in to Chaos Spawn!

HQ
Herald of Tzeentch with Chariot, Bolt of Tzeentch, Daemonic Gaze, Boon of Mutation and Master of Sorcery (130 points). 
Herald of Tzeentch with Chariot, Bolt of Tzeentch, Daemonic Gaze, Boon of Mutation and Master of Sorcery (130 points). 
Herald of Tzeentch on a Disk, Bolt of Tzeentch, Daemonic Gaze, Boon of Mutation and Master of Sorcery (130 points). 
Blue Scribes (110 points)

Troops:
7 Horrors of Tzeentch, The Changeling, Bolt of Tzeentch, Icon (159 points)

6 Horrors of Tzeentch, Bolt of Tzeentch, Icon (137 points)

Heavy Support:
Daemon Prince, Wings, Mark of Tzeentch, Bolt of Tzeentch, Boon of Mutation (230 points)
Daemon Prince, Wings, Mark of Tzeentch, Bolt of Tzeentch, Boon of Mutation (230 points)
Daemon Prince, Wings, Mark of Tzeentch, Bolt of Tzeentch, Boon of Mutation (230 points)

So this list isn't a grand tournament list or anything like that, but I thought it might be fun to proxy and see what happens...