Personally I am sad to see the old style return, the new models are terrific, dont get me wrong, but they just don't feel Slaaneshi to me, as others have noted, they would be great representing something else, but as daemonettes, just no...
I think this quote from the sculptor that helped do the Forge World Keeper captures the feeling of what a slaanesh model should be at the core:
"I never felt that the cow face keeper evoked on of the true horrors of Slaanesh...Attraction, the ability to be alien and yet still be attractive in spite of that alien-ness, if your opponent goes home and feels dirty inside from ogling your keeper I feel that we have captured the right look. All Slaanesh daemons should be bizarre and messed up, but in a way that you might still have sex with it."
I think the current metal ones embody this statement, those new ones do not, they look almost freakish, in a very cool way, just not a Slaaneshi way, it would be like Night goblins without the robes, sure you could call them night goblins, sure the models may look great, but ultimately they just don't "feel" like night goblins.
And yes, I know the new models are more like the old 5th ed models, but back then, I never felt like the models for Slaanesh matched the fluff, finally with 6th ed I felt in some ways they hit the nail right on the head (still not very partial to the boobworm or the squid head keeper though) but I was hoping they would continue in that direction for the new range
also there is one more thing to note, these new ones while, obviously freaky, don't seem to be as perverse and "nude" as the other ones, could this change be possibly to make warhammer more "PG" then it has been in the past?
Overall though every single preview of the new Daemonic range that I have seen thus far seems to be a step backwards IMO from the current 6th ed range... Oh well I guess, can't please everyone, hahahaha Im just glad we get to see previews so i can stock up on the old ones before they are discontinued
also... whats wrong with the 6 pack that they have on a couple of the current models, sure its kinda weird in a creepy way but, it doesnt ruin the models? Is it just a reflection of the immaturity of certain gamers on other boards?