To be honest I think the reason I am struggling so much to find a decent head replacement is because I don't really have a clear vision of what I want and I can't really find any decent inspiration on my usual places (Google Image search, Pintrest etc). I do quite like the Drycha and it's kinda giving me the idea of maybe a Daemonette breaking through the hull. At the moment though I am leaning towards using the Skull head (The Ad-mech one) as the model itself is already looking pretty daemonic!
@Cav- I do like the Gundam stuff and was thinking of a couple of Tau conversions using them, not sure they'd fit in that well with the Slaanesh theme though.
I've had a pretty good morning for progress today, so far I have managed:
Magnetised the Battle Cannon and Thermal Cannon and done the basis of a Serpent wrapped around the barrel of the Battle Cannon. Gonna need some more work when the Green Stuff is dried though.
Made the Shoulder pads a bit more spiky using some of the arms from the Seeker box and some Green stuff.
I made the Sword arm a bit more Daemonic using some Tentacles bursting out of the arm, It kinda takes away the slightly awkward transition from the arm to the blade as well.
And finally I did some work on the top of the Carapace, adding some spikes at the front:
And then mounted the Organ pipes and a Slaanesh banner pole.
All of the Green stuff areas are going to be painted to match the skin of my Daemonettes and Seekers. I'm not convinced that I have done that great a job on the sculpting of the Green stuff, I am a little worried that it's going to turn out quite Nurgle-ish! It will certainly look very Daemonic though.