Well,
To begin, you have my condolences. Tau and Eldar can be a real nuisance to vs, especially as chaos. My local meta has seen a similar such shift.
As for the list, I have 3 questions. (not criticisms, just my own curiosity)
1) What squad does the Chaos Lord sit in?
2) Why are there 4 Termies in the suicide squad? (to my knowledge the minimum 3 was the standard)
3) Why put a plasma pistol (1 shot at 12") on the
CSM squad instead of buying them a plasma gun (2 shots at 12" or 1 at 24") instead?
I do very much like the Soul Grinders, those things are amazing. I do wonder how effective the Chaos Space Marines are though. The terminators are all well and good, but I can't help but think that the Possessed, the
CSM squad and to a lessor extent lord are a bit of a waste of points. I imagine that the reason behind taking the Lords of Slaughter formation is so you can prescience the suicide meltas, but given that it is the only performing part of the formation, I question whether or not it might be paying too many points to buff what is, at the end of a the day, a throwaway unit.
But that's just my