Its disgusting in my opinion, but i'll do what i always do, one of a few things:Aye, i always liked that chaos did not get along and each chaos army had it's flavor..
but now you have khorn working with tezenitch...what bezerky would tolerate that.
1) Retreat to WFB: A much better, more mature game system all around IMO
2)Reinterpret the new codex for mysel: Its easy, and completely legal, totally free and great for themed armies. All you do is impose your own limits now the old ones are gone.
EG: My guard infantry regiment: No tanks, whatsoever. No abhumans, stormtroopers, sentinals etc. All models tweaked to make the heavy weapons look more portable.
However, you can't expect others to do the same. But you can rest safe in the knowledge that you're not some asshat with khorne, slaanesh, tzeench and nurgle troops in the same army.