Army List: 1500 points of Mixed Daemons

This is the mixed daemons army list that I've been playing around with recently. It consists of all four of the major powers in (approaching) equal quantities. I've taken it to tournaments and had reasonable results with it. It's not supposed to be "killer" or "top tier", but it is competitive without being overwhelming to newbies. It is somewhat changed from my usual "friendly" style list. I've linked to my random tactical thoughts on a couple of the choices that I've made, for reference. Comments welcome!

HQ:
Great Unclean One of Nurgle, Cloud of flies (165 points)
Herald of Tzeentch on a Chariot, with Bolt of Tzeentch (95 points)
Herald of Khorne on Juggernaut (105 points)

TROOPS:
11 bloodletters of Khorne (176 points)
11 plaguebearers of Nurgle, icon of chaos, instrument of chaos (195 points)
11 daemonettes of Slaanesh, transfixing gaze (159 points)
9 pink horrors of Tzeentch, chaos icon, bolt, The Changeling (195 points)

FAST ATTACK:
5 screamers of Tzeentch (80 points)

HEAVY SUPPORT:
Daemon prince with flight and iron hide (170 points)
Soul grinder of chaos with phlegm (160 points)

Total = 1498 points.

Footnote: My preferred first wave of deep-strikers are the Herald of Tzeentch, the plaguebearers of Nurgle, the daemonettes of Slaanesh, the soul grinder and the screamers of Tzeentch.